Remove NanoVG (#23147)
Adeeb Shihadeh
3 years ago
committed by
GitHub
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9 changed files with 0 additions and 18634 deletions
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//
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// Copyright (c) 2013 Mikko Mononen memon@inside.org
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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//
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#ifndef NANOVG_H |
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#define NANOVG_H |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#define NVG_PI 3.14159265358979323846264338327f |
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#ifdef _MSC_VER |
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#pragma warning(push) |
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#pragma warning(disable: 4201) // nonstandard extension used : nameless struct/union
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#endif |
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typedef struct NVGcontext NVGcontext; |
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struct NVGcolor { |
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union { |
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float rgba[4]; |
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struct { |
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float r,g,b,a; |
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}; |
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}; |
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}; |
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typedef struct NVGcolor NVGcolor; |
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struct NVGpaint { |
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float xform[6]; |
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float extent[2]; |
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float radius; |
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float feather; |
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NVGcolor innerColor; |
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NVGcolor outerColor; |
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int image; |
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}; |
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typedef struct NVGpaint NVGpaint; |
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enum NVGwinding { |
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NVG_CCW = 1, // Winding for solid shapes
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NVG_CW = 2, // Winding for holes
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}; |
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enum NVGsolidity { |
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NVG_SOLID = 1, // CCW
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NVG_HOLE = 2, // CW
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}; |
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enum NVGlineCap { |
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NVG_BUTT, |
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NVG_ROUND, |
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NVG_SQUARE, |
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NVG_BEVEL, |
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NVG_MITER, |
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}; |
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enum NVGalign { |
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// Horizontal align
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NVG_ALIGN_LEFT = 1<<0, // Default, align text horizontally to left.
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NVG_ALIGN_CENTER = 1<<1, // Align text horizontally to center.
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NVG_ALIGN_RIGHT = 1<<2, // Align text horizontally to right.
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// Vertical align
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NVG_ALIGN_TOP = 1<<3, // Align text vertically to top.
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NVG_ALIGN_MIDDLE = 1<<4, // Align text vertically to middle.
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NVG_ALIGN_BOTTOM = 1<<5, // Align text vertically to bottom.
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NVG_ALIGN_BASELINE = 1<<6, // Default, align text vertically to baseline.
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}; |
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enum NVGblendFactor { |
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NVG_ZERO = 1<<0, |
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NVG_ONE = 1<<1, |
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NVG_SRC_COLOR = 1<<2, |
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NVG_ONE_MINUS_SRC_COLOR = 1<<3, |
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NVG_DST_COLOR = 1<<4, |
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NVG_ONE_MINUS_DST_COLOR = 1<<5, |
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NVG_SRC_ALPHA = 1<<6, |
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NVG_ONE_MINUS_SRC_ALPHA = 1<<7, |
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NVG_DST_ALPHA = 1<<8, |
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NVG_ONE_MINUS_DST_ALPHA = 1<<9, |
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NVG_SRC_ALPHA_SATURATE = 1<<10, |
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}; |
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enum NVGcompositeOperation { |
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NVG_SOURCE_OVER, |
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NVG_SOURCE_IN, |
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NVG_SOURCE_OUT, |
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NVG_ATOP, |
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NVG_DESTINATION_OVER, |
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NVG_DESTINATION_IN, |
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NVG_DESTINATION_OUT, |
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NVG_DESTINATION_ATOP, |
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NVG_LIGHTER, |
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NVG_COPY, |
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NVG_XOR, |
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}; |
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struct NVGcompositeOperationState { |
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int srcRGB; |
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int dstRGB; |
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int srcAlpha; |
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int dstAlpha; |
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}; |
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typedef struct NVGcompositeOperationState NVGcompositeOperationState; |
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struct NVGglyphPosition { |
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const char* str; // Position of the glyph in the input string.
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float x; // The x-coordinate of the logical glyph position.
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float minx, maxx; // The bounds of the glyph shape.
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}; |
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typedef struct NVGglyphPosition NVGglyphPosition; |
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struct NVGtextRow { |
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const char* start; // Pointer to the input text where the row starts.
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const char* end; // Pointer to the input text where the row ends (one past the last character).
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const char* next; // Pointer to the beginning of the next row.
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float width; // Logical width of the row.
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float minx, maxx; // Actual bounds of the row. Logical with and bounds can differ because of kerning and some parts over extending.
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}; |
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typedef struct NVGtextRow NVGtextRow; |
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enum NVGimageFlags { |
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NVG_IMAGE_GENERATE_MIPMAPS = 1<<0, // Generate mipmaps during creation of the image.
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NVG_IMAGE_REPEATX = 1<<1, // Repeat image in X direction.
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NVG_IMAGE_REPEATY = 1<<2, // Repeat image in Y direction.
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NVG_IMAGE_FLIPY = 1<<3, // Flips (inverses) image in Y direction when rendered.
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NVG_IMAGE_PREMULTIPLIED = 1<<4, // Image data has premultiplied alpha.
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}; |
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// Begin drawing a new frame
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// Calls to nanovg drawing API should be wrapped in nvgBeginFrame() & nvgEndFrame()
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// nvgBeginFrame() defines the size of the window to render to in relation currently
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// set viewport (i.e. glViewport on GL backends). Device pixel ration allows to
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// control the rendering on Hi-DPI devices.
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// For example, GLFW returns two dimension for an opened window: window size and
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// frame buffer size. In that case you would set windowWidth/Height to the window size
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// devicePixelRatio to: frameBufferWidth / windowWidth.
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void nvgBeginFrame(NVGcontext* ctx, int windowWidth, int windowHeight, float devicePixelRatio); |
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// Cancels drawing the current frame.
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void nvgCancelFrame(NVGcontext* ctx); |
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// Ends drawing flushing remaining render state.
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void nvgEndFrame(NVGcontext* ctx); |
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//
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// Composite operation
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//
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// The composite operations in NanoVG are modeled after HTML Canvas API, and
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// the blend func is based on OpenGL (see corresponding manuals for more info).
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// The colors in the blending state have premultiplied alpha.
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// Sets the composite operation. The op parameter should be one of NVGcompositeOperation.
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void nvgGlobalCompositeOperation(NVGcontext* ctx, int op); |
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// Sets the composite operation with custom pixel arithmetic. The parameters should be one of NVGblendFactor.
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void nvgGlobalCompositeBlendFunc(NVGcontext* ctx, int sfactor, int dfactor); |
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// Sets the composite operation with custom pixel arithmetic for RGB and alpha components separately. The parameters should be one of NVGblendFactor.
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void nvgGlobalCompositeBlendFuncSeparate(NVGcontext* ctx, int srcRGB, int dstRGB, int srcAlpha, int dstAlpha); |
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//
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// Color utils
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//
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// Colors in NanoVG are stored as unsigned ints in ABGR format.
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// Returns a color value from red, green, blue values. Alpha will be set to 255 (1.0f).
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NVGcolor nvgRGB(unsigned char r, unsigned char g, unsigned char b); |
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// Returns a color value from red, green, blue values. Alpha will be set to 1.0f.
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NVGcolor nvgRGBf(float r, float g, float b); |
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// Returns a color value from red, green, blue and alpha values.
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NVGcolor nvgRGBA(unsigned char r, unsigned char g, unsigned char b, unsigned char a); |
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// Returns a color value from red, green, blue and alpha values.
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NVGcolor nvgRGBAf(float r, float g, float b, float a); |
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// Linearly interpolates from color c0 to c1, and returns resulting color value.
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NVGcolor nvgLerpRGBA(NVGcolor c0, NVGcolor c1, float u); |
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// Sets transparency of a color value.
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NVGcolor nvgTransRGBA(NVGcolor c0, unsigned char a); |
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// Sets transparency of a color value.
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NVGcolor nvgTransRGBAf(NVGcolor c0, float a); |
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// Returns color value specified by hue, saturation and lightness.
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// HSL values are all in range [0..1], alpha will be set to 255.
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NVGcolor nvgHSL(float h, float s, float l); |
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// Returns color value specified by hue, saturation and lightness and alpha.
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// HSL values are all in range [0..1], alpha in range [0..255]
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NVGcolor nvgHSLA(float h, float s, float l, unsigned char a); |
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//
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// State Handling
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//
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// NanoVG contains state which represents how paths will be rendered.
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// The state contains transform, fill and stroke styles, text and font styles,
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// and scissor clipping.
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// Pushes and saves the current render state into a state stack.
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// A matching nvgRestore() must be used to restore the state.
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void nvgSave(NVGcontext* ctx); |
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// Pops and restores current render state.
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void nvgRestore(NVGcontext* ctx); |
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// Resets current render state to default values. Does not affect the render state stack.
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void nvgReset(NVGcontext* ctx); |
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//
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// Render styles
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//
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// Fill and stroke render style can be either a solid color or a paint which is a gradient or a pattern.
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// Solid color is simply defined as a color value, different kinds of paints can be created
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// using nvgLinearGradient(), nvgBoxGradient(), nvgRadialGradient() and nvgImagePattern().
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//
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// Current render style can be saved and restored using nvgSave() and nvgRestore().
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// Sets current stroke style to a solid color.
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void nvgStrokeColor(NVGcontext* ctx, NVGcolor color); |
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// Sets current stroke style to a paint, which can be a one of the gradients or a pattern.
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void nvgStrokePaint(NVGcontext* ctx, NVGpaint paint); |
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// Sets current fill style to a solid color.
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void nvgFillColor(NVGcontext* ctx, NVGcolor color); |
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// Sets current fill style to a paint, which can be a one of the gradients or a pattern.
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void nvgFillPaint(NVGcontext* ctx, NVGpaint paint); |
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// Sets the miter limit of the stroke style.
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// Miter limit controls when a sharp corner is beveled.
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void nvgMiterLimit(NVGcontext* ctx, float limit); |
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// Sets the stroke width of the stroke style.
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void nvgStrokeWidth(NVGcontext* ctx, float size); |
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// Sets how the end of the line (cap) is drawn,
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// Can be one of: NVG_BUTT (default), NVG_ROUND, NVG_SQUARE.
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void nvgLineCap(NVGcontext* ctx, int cap); |
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// Sets how sharp path corners are drawn.
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// Can be one of NVG_MITER (default), NVG_ROUND, NVG_BEVEL.
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void nvgLineJoin(NVGcontext* ctx, int join); |
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// Sets the transparency applied to all rendered shapes.
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// Already transparent paths will get proportionally more transparent as well.
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void nvgGlobalAlpha(NVGcontext* ctx, float alpha); |
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//
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// Transforms
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//
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// The paths, gradients, patterns and scissor region are transformed by an transformation
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// matrix at the time when they are passed to the API.
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// The current transformation matrix is a affine matrix:
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// [sx kx tx]
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// [ky sy ty]
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// [ 0 0 1]
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// Where: sx,sy define scaling, kx,ky skewing, and tx,ty translation.
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// The last row is assumed to be 0,0,1 and is not stored.
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//
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// Apart from nvgResetTransform(), each transformation function first creates
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// specific transformation matrix and pre-multiplies the current transformation by it.
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//
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// Current coordinate system (transformation) can be saved and restored using nvgSave() and nvgRestore().
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// Resets current transform to a identity matrix.
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void nvgResetTransform(NVGcontext* ctx); |
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// Premultiplies current coordinate system by specified matrix.
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// The parameters are interpreted as matrix as follows:
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// [a c e]
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// [b d f]
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// [0 0 1]
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void nvgTransform(NVGcontext* ctx, float a, float b, float c, float d, float e, float f); |
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// Translates current coordinate system.
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void nvgTranslate(NVGcontext* ctx, float x, float y); |
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// Rotates current coordinate system. Angle is specified in radians.
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void nvgRotate(NVGcontext* ctx, float angle); |
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// Skews the current coordinate system along X axis. Angle is specified in radians.
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void nvgSkewX(NVGcontext* ctx, float angle); |
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// Skews the current coordinate system along Y axis. Angle is specified in radians.
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void nvgSkewY(NVGcontext* ctx, float angle); |
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// Scales the current coordinate system.
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void nvgScale(NVGcontext* ctx, float x, float y); |
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// Stores the top part (a-f) of the current transformation matrix in to the specified buffer.
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// [a c e]
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// [b d f]
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// [0 0 1]
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// There should be space for 6 floats in the return buffer for the values a-f.
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void nvgCurrentTransform(NVGcontext* ctx, float* xform); |
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// The following functions can be used to make calculations on 2x3 transformation matrices.
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// A 2x3 matrix is represented as float[6].
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// Sets the transform to identity matrix.
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void nvgTransformIdentity(float* dst); |
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// Sets the transform to translation matrix matrix.
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void nvgTransformTranslate(float* dst, float tx, float ty); |
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// Sets the transform to scale matrix.
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void nvgTransformScale(float* dst, float sx, float sy); |
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// Sets the transform to rotate matrix. Angle is specified in radians.
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void nvgTransformRotate(float* dst, float a); |
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// Sets the transform to skew-x matrix. Angle is specified in radians.
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void nvgTransformSkewX(float* dst, float a); |
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// Sets the transform to skew-y matrix. Angle is specified in radians.
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void nvgTransformSkewY(float* dst, float a); |
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// Sets the transform to the result of multiplication of two transforms, of A = A*B.
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void nvgTransformMultiply(float* dst, const float* src); |
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// Sets the transform to the result of multiplication of two transforms, of A = B*A.
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void nvgTransformPremultiply(float* dst, const float* src); |
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// Sets the destination to inverse of specified transform.
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// Returns 1 if the inverse could be calculated, else 0.
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int nvgTransformInverse(float* dst, const float* src); |
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// Transform a point by given transform.
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void nvgTransformPoint(float* dstx, float* dsty, const float* xform, float srcx, float srcy); |
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// Converts degrees to radians and vice versa.
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float nvgDegToRad(float deg); |
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float nvgRadToDeg(float rad); |
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//
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// Images
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//
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// NanoVG allows you to load jpg, png, psd, tga, pic and gif files to be used for rendering.
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// In addition you can upload your own image. The image loading is provided by stb_image.
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// The parameter imageFlags is combination of flags defined in NVGimageFlags.
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// Creates image by loading it from the disk from specified file name.
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// Returns handle to the image.
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int nvgCreateImage(NVGcontext* ctx, const char* filename, int imageFlags); |
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// Creates image by loading it from the specified chunk of memory.
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// Returns handle to the image.
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int nvgCreateImageMem(NVGcontext* ctx, int imageFlags, unsigned char* data, int ndata); |
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// Creates image from specified image data.
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// Returns handle to the image.
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|
||||||
int nvgCreateImageRGBA(NVGcontext* ctx, int w, int h, int imageFlags, const unsigned char* data); |
|
||||||
|
|
||||||
// Updates image data specified by image handle.
|
|
||||||
void nvgUpdateImage(NVGcontext* ctx, int image, const unsigned char* data); |
|
||||||
|
|
||||||
// Returns the dimensions of a created image.
|
|
||||||
void nvgImageSize(NVGcontext* ctx, int image, int* w, int* h); |
|
||||||
|
|
||||||
// Deletes created image.
|
|
||||||
void nvgDeleteImage(NVGcontext* ctx, int image); |
|
||||||
|
|
||||||
//
|
|
||||||
// Paints
|
|
||||||
//
|
|
||||||
// NanoVG supports four types of paints: linear gradient, box gradient, radial gradient and image pattern.
|
|
||||||
// These can be used as paints for strokes and fills.
|
|
||||||
|
|
||||||
// Creates and returns a linear gradient. Parameters (sx,sy)-(ex,ey) specify the start and end coordinates
|
|
||||||
// of the linear gradient, icol specifies the start color and ocol the end color.
|
|
||||||
// The gradient is transformed by the current transform when it is passed to nvgFillPaint() or nvgStrokePaint().
|
|
||||||
NVGpaint nvgLinearGradient(NVGcontext* ctx, float sx, float sy, float ex, float ey, |
|
||||||
NVGcolor icol, NVGcolor ocol); |
|
||||||
|
|
||||||
// Creates and returns a box gradient. Box gradient is a feathered rounded rectangle, it is useful for rendering
|
|
||||||
// drop shadows or highlights for boxes. Parameters (x,y) define the top-left corner of the rectangle,
|
|
||||||
// (w,h) define the size of the rectangle, r defines the corner radius, and f feather. Feather defines how blurry
|
|
||||||
// the border of the rectangle is. Parameter icol specifies the inner color and ocol the outer color of the gradient.
|
|
||||||
// The gradient is transformed by the current transform when it is passed to nvgFillPaint() or nvgStrokePaint().
|
|
||||||
NVGpaint nvgBoxGradient(NVGcontext* ctx, float x, float y, float w, float h, |
|
||||||
float r, float f, NVGcolor icol, NVGcolor ocol); |
|
||||||
|
|
||||||
// Creates and returns a radial gradient. Parameters (cx,cy) specify the center, inr and outr specify
|
|
||||||
// the inner and outer radius of the gradient, icol specifies the start color and ocol the end color.
|
|
||||||
// The gradient is transformed by the current transform when it is passed to nvgFillPaint() or nvgStrokePaint().
|
|
||||||
NVGpaint nvgRadialGradient(NVGcontext* ctx, float cx, float cy, float inr, float outr, |
|
||||||
NVGcolor icol, NVGcolor ocol); |
|
||||||
|
|
||||||
// Creates and returns an image patter. Parameters (ox,oy) specify the left-top location of the image pattern,
|
|
||||||
// (ex,ey) the size of one image, angle rotation around the top-left corner, image is handle to the image to render.
|
|
||||||
// The gradient is transformed by the current transform when it is passed to nvgFillPaint() or nvgStrokePaint().
|
|
||||||
NVGpaint nvgImagePattern(NVGcontext* ctx, float ox, float oy, float ex, float ey, |
|
||||||
float angle, int image, float alpha); |
|
||||||
|
|
||||||
//
|
|
||||||
// Scissoring
|
|
||||||
//
|
|
||||||
// Scissoring allows you to clip the rendering into a rectangle. This is useful for various
|
|
||||||
// user interface cases like rendering a text edit or a timeline.
|
|
||||||
|
|
||||||
// Sets the current scissor rectangle.
|
|
||||||
// The scissor rectangle is transformed by the current transform.
|
|
||||||
void nvgScissor(NVGcontext* ctx, float x, float y, float w, float h); |
|
||||||
|
|
||||||
// Intersects current scissor rectangle with the specified rectangle.
|
|
||||||
// The scissor rectangle is transformed by the current transform.
|
|
||||||
// Note: in case the rotation of previous scissor rect differs from
|
|
||||||
// the current one, the intersection will be done between the specified
|
|
||||||
// rectangle and the previous scissor rectangle transformed in the current
|
|
||||||
// transform space. The resulting shape is always rectangle.
|
|
||||||
void nvgIntersectScissor(NVGcontext* ctx, float x, float y, float w, float h); |
|
||||||
|
|
||||||
// Reset and disables scissoring.
|
|
||||||
void nvgResetScissor(NVGcontext* ctx); |
|
||||||
|
|
||||||
//
|
|
||||||
// Paths
|
|
||||||
//
|
|
||||||
// Drawing a new shape starts with nvgBeginPath(), it clears all the currently defined paths.
|
|
||||||
// Then you define one or more paths and sub-paths which describe the shape. The are functions
|
|
||||||
// to draw common shapes like rectangles and circles, and lower level step-by-step functions,
|
|
||||||
// which allow to define a path curve by curve.
|
|
||||||
//
|
|
||||||
// NanoVG uses even-odd fill rule to draw the shapes. Solid shapes should have counter clockwise
|
|
||||||
// winding and holes should have counter clockwise order. To specify winding of a path you can
|
|
||||||
// call nvgPathWinding(). This is useful especially for the common shapes, which are drawn CCW.
|
|
||||||
//
|
|
||||||
// Finally you can fill the path using current fill style by calling nvgFill(), and stroke it
|
|
||||||
// with current stroke style by calling nvgStroke().
|
|
||||||
//
|
|
||||||
// The curve segments and sub-paths are transformed by the current transform.
|
|
||||||
|
|
||||||
// Clears the current path and sub-paths.
|
|
||||||
void nvgBeginPath(NVGcontext* ctx); |
|
||||||
|
|
||||||
// Starts new sub-path with specified point as first point.
|
|
||||||
void nvgMoveTo(NVGcontext* ctx, float x, float y); |
|
||||||
|
|
||||||
// Adds line segment from the last point in the path to the specified point.
|
|
||||||
void nvgLineTo(NVGcontext* ctx, float x, float y); |
|
||||||
|
|
||||||
// Adds cubic bezier segment from last point in the path via two control points to the specified point.
|
|
||||||
void nvgBezierTo(NVGcontext* ctx, float c1x, float c1y, float c2x, float c2y, float x, float y); |
|
||||||
|
|
||||||
// Adds quadratic bezier segment from last point in the path via a control point to the specified point.
|
|
||||||
void nvgQuadTo(NVGcontext* ctx, float cx, float cy, float x, float y); |
|
||||||
|
|
||||||
// Adds an arc segment at the corner defined by the last path point, and two specified points.
|
|
||||||
void nvgArcTo(NVGcontext* ctx, float x1, float y1, float x2, float y2, float radius); |
|
||||||
|
|
||||||
// Closes current sub-path with a line segment.
|
|
||||||
void nvgClosePath(NVGcontext* ctx); |
|
||||||
|
|
||||||
// Sets the current sub-path winding, see NVGwinding and NVGsolidity.
|
|
||||||
void nvgPathWinding(NVGcontext* ctx, int dir); |
|
||||||
|
|
||||||
// Creates new circle arc shaped sub-path. The arc center is at cx,cy, the arc radius is r,
|
|
||||||
// and the arc is drawn from angle a0 to a1, and swept in direction dir (NVG_CCW, or NVG_CW).
|
|
||||||
// Angles are specified in radians.
|
|
||||||
void nvgArc(NVGcontext* ctx, float cx, float cy, float r, float a0, float a1, int dir); |
|
||||||
|
|
||||||
// Creates new rectangle shaped sub-path.
|
|
||||||
void nvgRect(NVGcontext* ctx, float x, float y, float w, float h); |
|
||||||
|
|
||||||
// Creates new rounded rectangle shaped sub-path.
|
|
||||||
void nvgRoundedRect(NVGcontext* ctx, float x, float y, float w, float h, float r); |
|
||||||
|
|
||||||
// Creates new rounded rectangle shaped sub-path with varying radii for each corner.
|
|
||||||
void nvgRoundedRectVarying(NVGcontext* ctx, float x, float y, float w, float h, float radTopLeft, float radTopRight, float radBottomRight, float radBottomLeft); |
|
||||||
|
|
||||||
// Creates new ellipse shaped sub-path.
|
|
||||||
void nvgEllipse(NVGcontext* ctx, float cx, float cy, float rx, float ry); |
|
||||||
|
|
||||||
// Creates new circle shaped sub-path.
|
|
||||||
void nvgCircle(NVGcontext* ctx, float cx, float cy, float r); |
|
||||||
|
|
||||||
// Fills the current path with current fill style.
|
|
||||||
void nvgFill(NVGcontext* ctx); |
|
||||||
|
|
||||||
// Fills the current path with current stroke style.
|
|
||||||
void nvgStroke(NVGcontext* ctx); |
|
||||||
|
|
||||||
|
|
||||||
//
|
|
||||||
// Text
|
|
||||||
//
|
|
||||||
// NanoVG allows you to load .ttf files and use the font to render text.
|
|
||||||
//
|
|
||||||
// The appearance of the text can be defined by setting the current text style
|
|
||||||
// and by specifying the fill color. Common text and font settings such as
|
|
||||||
// font size, letter spacing and text align are supported. Font blur allows you
|
|
||||||
// to create simple text effects such as drop shadows.
|
|
||||||
//
|
|
||||||
// At render time the font face can be set based on the font handles or name.
|
|
||||||
//
|
|
||||||
// Font measure functions return values in local space, the calculations are
|
|
||||||
// carried in the same resolution as the final rendering. This is done because
|
|
||||||
// the text glyph positions are snapped to the nearest pixels sharp rendering.
|
|
||||||
//
|
|
||||||
// The local space means that values are not rotated or scale as per the current
|
|
||||||
// transformation. For example if you set font size to 12, which would mean that
|
|
||||||
// line height is 16, then regardless of the current scaling and rotation, the
|
|
||||||
// returned line height is always 16. Some measures may vary because of the scaling
|
|
||||||
// since aforementioned pixel snapping.
|
|
||||||
//
|
|
||||||
// While this may sound a little odd, the setup allows you to always render the
|
|
||||||
// same way regardless of scaling. I.e. following works regardless of scaling:
|
|
||||||
//
|
|
||||||
// const char* txt = "Text me up.";
|
|
||||||
// nvgTextBounds(vg, x,y, txt, NULL, bounds);
|
|
||||||
// nvgBeginPath(vg);
|
|
||||||
// nvgRoundedRect(vg, bounds[0],bounds[1], bounds[2]-bounds[0], bounds[3]-bounds[1]);
|
|
||||||
// nvgFill(vg);
|
|
||||||
//
|
|
||||||
// Note: currently only solid color fill is supported for text.
|
|
||||||
|
|
||||||
// Creates font by loading it from the disk from specified file name.
|
|
||||||
// Returns handle to the font.
|
|
||||||
int nvgCreateFont(NVGcontext* ctx, const char* name, const char* filename); |
|
||||||
|
|
||||||
// Creates font by loading it from the specified memory chunk.
|
|
||||||
// Returns handle to the font.
|
|
||||||
int nvgCreateFontMem(NVGcontext* ctx, const char* name, unsigned char* data, int ndata, int freeData); |
|
||||||
|
|
||||||
// Finds a loaded font of specified name, and returns handle to it, or -1 if the font is not found.
|
|
||||||
int nvgFindFont(NVGcontext* ctx, const char* name); |
|
||||||
|
|
||||||
// Adds a fallback font by handle.
|
|
||||||
int nvgAddFallbackFontId(NVGcontext* ctx, int baseFont, int fallbackFont); |
|
||||||
|
|
||||||
// Adds a fallback font by name.
|
|
||||||
int nvgAddFallbackFont(NVGcontext* ctx, const char* baseFont, const char* fallbackFont); |
|
||||||
|
|
||||||
// Sets the font size of current text style.
|
|
||||||
void nvgFontSize(NVGcontext* ctx, float size); |
|
||||||
|
|
||||||
// Sets the blur of current text style.
|
|
||||||
void nvgFontBlur(NVGcontext* ctx, float blur); |
|
||||||
|
|
||||||
// Sets the letter spacing of current text style.
|
|
||||||
void nvgTextLetterSpacing(NVGcontext* ctx, float spacing); |
|
||||||
|
|
||||||
// Sets the proportional line height of current text style. The line height is specified as multiple of font size.
|
|
||||||
void nvgTextLineHeight(NVGcontext* ctx, float lineHeight); |
|
||||||
|
|
||||||
// Sets the text align of current text style, see NVGalign for options.
|
|
||||||
void nvgTextAlign(NVGcontext* ctx, int align); |
|
||||||
|
|
||||||
// Sets the font face based on specified id of current text style.
|
|
||||||
void nvgFontFaceId(NVGcontext* ctx, int font); |
|
||||||
|
|
||||||
// Sets the font face based on specified name of current text style.
|
|
||||||
void nvgFontFace(NVGcontext* ctx, const char* font); |
|
||||||
|
|
||||||
// Draws text string at specified location. If end is specified only the sub-string up to the end is drawn.
|
|
||||||
float nvgText(NVGcontext* ctx, float x, float y, const char* string, const char* end); |
|
||||||
|
|
||||||
// Draws multi-line text string at specified location wrapped at the specified width. If end is specified only the sub-string up to the end is drawn.
|
|
||||||
// White space is stripped at the beginning of the rows, the text is split at word boundaries or when new-line characters are encountered.
|
|
||||||
// Words longer than the max width are slit at nearest character (i.e. no hyphenation).
|
|
||||||
void nvgTextBox(NVGcontext* ctx, float x, float y, float breakRowWidth, const char* string, const char* end); |
|
||||||
|
|
||||||
// Measures the specified text string. Parameter bounds should be a pointer to float[4],
|
|
||||||
// if the bounding box of the text should be returned. The bounds value are [xmin,ymin, xmax,ymax]
|
|
||||||
// Returns the horizontal advance of the measured text (i.e. where the next character should drawn).
|
|
||||||
// Measured values are returned in local coordinate space.
|
|
||||||
float nvgTextBounds(NVGcontext* ctx, float x, float y, const char* string, const char* end, float* bounds); |
|
||||||
|
|
||||||
// Measures the specified multi-text string. Parameter bounds should be a pointer to float[4],
|
|
||||||
// if the bounding box of the text should be returned. The bounds value are [xmin,ymin, xmax,ymax]
|
|
||||||
// Measured values are returned in local coordinate space.
|
|
||||||
void nvgTextBoxBounds(NVGcontext* ctx, float x, float y, float breakRowWidth, const char* string, const char* end, float* bounds); |
|
||||||
|
|
||||||
// Calculates the glyph x positions of the specified text. If end is specified only the sub-string will be used.
|
|
||||||
// Measured values are returned in local coordinate space.
|
|
||||||
int nvgTextGlyphPositions(NVGcontext* ctx, float x, float y, const char* string, const char* end, NVGglyphPosition* positions, int maxPositions); |
|
||||||
|
|
||||||
// Returns the vertical metrics based on the current text style.
|
|
||||||
// Measured values are returned in local coordinate space.
|
|
||||||
void nvgTextMetrics(NVGcontext* ctx, float* ascender, float* descender, float* lineh); |
|
||||||
|
|
||||||
// Breaks the specified text into lines. If end is specified only the sub-string will be used.
|
|
||||||
// White space is stripped at the beginning of the rows, the text is split at word boundaries or when new-line characters are encountered.
|
|
||||||
// Words longer than the max width are slit at nearest character (i.e. no hyphenation).
|
|
||||||
int nvgTextBreakLines(NVGcontext* ctx, const char* string, const char* end, float breakRowWidth, NVGtextRow* rows, int maxRows); |
|
||||||
|
|
||||||
//
|
|
||||||
// Internal Render API
|
|
||||||
//
|
|
||||||
enum NVGtexture { |
|
||||||
NVG_TEXTURE_ALPHA = 0x01, |
|
||||||
NVG_TEXTURE_RGBA = 0x02, |
|
||||||
}; |
|
||||||
|
|
||||||
struct NVGscissor { |
|
||||||
float xform[6]; |
|
||||||
float extent[2]; |
|
||||||
}; |
|
||||||
typedef struct NVGscissor NVGscissor; |
|
||||||
|
|
||||||
struct NVGvertex { |
|
||||||
float x,y,u,v; |
|
||||||
}; |
|
||||||
typedef struct NVGvertex NVGvertex; |
|
||||||
|
|
||||||
struct NVGpath { |
|
||||||
int first; |
|
||||||
int count; |
|
||||||
unsigned char closed; |
|
||||||
int nbevel; |
|
||||||
NVGvertex* fill; |
|
||||||
int nfill; |
|
||||||
NVGvertex* stroke; |
|
||||||
int nstroke; |
|
||||||
int winding; |
|
||||||
int convex; |
|
||||||
}; |
|
||||||
typedef struct NVGpath NVGpath; |
|
||||||
|
|
||||||
struct NVGparams { |
|
||||||
void* userPtr; |
|
||||||
int edgeAntiAlias; |
|
||||||
int (*renderCreate)(void* uptr); |
|
||||||
int (*renderCreateTexture)(void* uptr, int type, int w, int h, int imageFlags, const unsigned char* data); |
|
||||||
int (*renderDeleteTexture)(void* uptr, int image); |
|
||||||
int (*renderUpdateTexture)(void* uptr, int image, int x, int y, int w, int h, const unsigned char* data); |
|
||||||
int (*renderGetTextureSize)(void* uptr, int image, int* w, int* h); |
|
||||||
void (*renderViewport)(void* uptr, int width, int height, float devicePixelRatio); |
|
||||||
void (*renderCancel)(void* uptr); |
|
||||||
void (*renderFlush)(void* uptr, NVGcompositeOperationState compositeOperation); |
|
||||||
void (*renderFill)(void* uptr, NVGpaint* paint, NVGscissor* scissor, float fringe, const float* bounds, const NVGpath* paths, int npaths); |
|
||||||
void (*renderStroke)(void* uptr, NVGpaint* paint, NVGscissor* scissor, float fringe, float strokeWidth, const NVGpath* paths, int npaths); |
|
||||||
void (*renderTriangles)(void* uptr, NVGpaint* paint, NVGscissor* scissor, const NVGvertex* verts, int nverts); |
|
||||||
void (*renderDelete)(void* uptr); |
|
||||||
}; |
|
||||||
typedef struct NVGparams NVGparams; |
|
||||||
|
|
||||||
// Constructor and destructor, called by the render back-end.
|
|
||||||
NVGcontext* nvgCreateInternal(NVGparams* params); |
|
||||||
void nvgDeleteInternal(NVGcontext* ctx); |
|
||||||
|
|
||||||
NVGparams* nvgInternalParams(NVGcontext* ctx); |
|
||||||
|
|
||||||
// Debug function to dump cached path data.
|
|
||||||
void nvgDebugDumpPathCache(NVGcontext* ctx); |
|
||||||
|
|
||||||
#ifdef _MSC_VER |
|
||||||
#pragma warning(pop) |
|
||||||
#endif |
|
||||||
|
|
||||||
#define NVG_NOTUSED(v) for (;;) { (void)(1 ? (void)0 : ( (void)(v) ) ); break; } |
|
||||||
|
|
||||||
#ifdef __cplusplus |
|
||||||
} |
|
||||||
#endif |
|
||||||
|
|
||||||
#endif // NANOVG_H
|
|
||||||
File diff suppressed because it is too large
Load Diff
@ -1,143 +0,0 @@ |
|||||||
//
|
|
||||||
// Copyright (c) 2009-2013 Mikko Mononen memon@inside.org
|
|
||||||
//
|
|
||||||
// This software is provided 'as-is', without any express or implied
|
|
||||||
// warranty. In no event will the authors be held liable for any damages
|
|
||||||
// arising from the use of this software.
|
|
||||||
// Permission is granted to anyone to use this software for any purpose,
|
|
||||||
// including commercial applications, and to alter it and redistribute it
|
|
||||||
// freely, subject to the following restrictions:
|
|
||||||
// 1. The origin of this software must not be misrepresented; you must not
|
|
||||||
// claim that you wrote the original software. If you use this software
|
|
||||||
// in a product, an acknowledgment in the product documentation would be
|
|
||||||
// appreciated but is not required.
|
|
||||||
// 2. Altered source versions must be plainly marked as such, and must not be
|
|
||||||
// misrepresented as being the original software.
|
|
||||||
// 3. This notice may not be removed or altered from any source distribution.
|
|
||||||
//
|
|
||||||
#ifndef NANOVG_GL_UTILS_H |
|
||||||
#define NANOVG_GL_UTILS_H |
|
||||||
|
|
||||||
struct NVGLUframebuffer { |
|
||||||
NVGcontext* ctx; |
|
||||||
GLuint fbo; |
|
||||||
GLuint rbo; |
|
||||||
GLuint texture; |
|
||||||
int image; |
|
||||||
}; |
|
||||||
typedef struct NVGLUframebuffer NVGLUframebuffer; |
|
||||||
|
|
||||||
// Helper function to create GL frame buffer to render to.
|
|
||||||
void nvgluBindFramebuffer(NVGLUframebuffer* fb); |
|
||||||
NVGLUframebuffer* nvgluCreateFramebuffer(NVGcontext* ctx, int w, int h, int imageFlags); |
|
||||||
void nvgluDeleteFramebuffer(NVGLUframebuffer* fb); |
|
||||||
|
|
||||||
#endif // NANOVG_GL_UTILS_H
|
|
||||||
|
|
||||||
#ifdef NANOVG_GL_IMPLEMENTATION |
|
||||||
|
|
||||||
#if defined(NANOVG_GL3) || defined(NANOVG_GLES2) || defined(NANOVG_GLES3) |
|
||||||
// FBO is core in OpenGL 3>.
|
|
||||||
# define NANOVG_FBO_VALID 1 |
|
||||||
#elif defined(NANOVG_GL2) |
|
||||||
// On OS X including glext defines FBO on GL2 too.
|
|
||||||
# ifdef __APPLE__ |
|
||||||
# include <OpenGL/glext.h> |
|
||||||
# define NANOVG_FBO_VALID 1 |
|
||||||
# endif |
|
||||||
#endif |
|
||||||
|
|
||||||
static GLint defaultFBO = -1; |
|
||||||
|
|
||||||
NVGLUframebuffer* nvgluCreateFramebuffer(NVGcontext* ctx, int w, int h, int imageFlags) |
|
||||||
{ |
|
||||||
#ifdef NANOVG_FBO_VALID |
|
||||||
GLint localDefaultFBO; |
|
||||||
GLint defaultRBO; |
|
||||||
NVGLUframebuffer* fb = NULL; |
|
||||||
|
|
||||||
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &localDefaultFBO); |
|
||||||
glGetIntegerv(GL_RENDERBUFFER_BINDING, &defaultRBO); |
|
||||||
|
|
||||||
fb = (NVGLUframebuffer*)malloc(sizeof(NVGLUframebuffer)); |
|
||||||
if (fb == NULL) goto error; |
|
||||||
memset(fb, 0, sizeof(NVGLUframebuffer)); |
|
||||||
|
|
||||||
fb->image = nvgCreateImageRGBA(ctx, w, h, imageFlags | NVG_IMAGE_FLIPY | NVG_IMAGE_PREMULTIPLIED, NULL); |
|
||||||
|
|
||||||
#if defined NANOVG_GL2 |
|
||||||
fb->texture = nvglImageHandleGL2(ctx, fb->image); |
|
||||||
#elif defined NANOVG_GL3 |
|
||||||
fb->texture = nvglImageHandleGL3(ctx, fb->image); |
|
||||||
#elif defined NANOVG_GLES2 |
|
||||||
fb->texture = nvglImageHandleGLES2(ctx, fb->image); |
|
||||||
#elif defined NANOVG_GLES3 |
|
||||||
fb->texture = nvglImageHandleGLES3(ctx, fb->image); |
|
||||||
#endif |
|
||||||
|
|
||||||
fb->ctx = ctx; |
|
||||||
|
|
||||||
// frame buffer object
|
|
||||||
glGenFramebuffers(1, &fb->fbo); |
|
||||||
glBindFramebuffer(GL_FRAMEBUFFER, fb->fbo); |
|
||||||
|
|
||||||
// render buffer object
|
|
||||||
glGenRenderbuffers(1, &fb->rbo); |
|
||||||
glBindRenderbuffer(GL_RENDERBUFFER, fb->rbo); |
|
||||||
glRenderbufferStorage(GL_RENDERBUFFER, GL_STENCIL_INDEX8, w, h); |
|
||||||
|
|
||||||
// combine all
|
|
||||||
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb->texture, 0); |
|
||||||
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fb->rbo); |
|
||||||
|
|
||||||
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) goto error; |
|
||||||
|
|
||||||
glBindFramebuffer(GL_FRAMEBUFFER, localDefaultFBO); |
|
||||||
glBindRenderbuffer(GL_RENDERBUFFER, defaultRBO); |
|
||||||
return fb; |
|
||||||
error: |
|
||||||
glBindFramebuffer(GL_FRAMEBUFFER, localDefaultFBO); |
|
||||||
glBindRenderbuffer(GL_RENDERBUFFER, defaultRBO); |
|
||||||
nvgluDeleteFramebuffer(fb); |
|
||||||
return NULL; |
|
||||||
#else |
|
||||||
NVG_NOTUSED(ctx); |
|
||||||
NVG_NOTUSED(w); |
|
||||||
NVG_NOTUSED(h); |
|
||||||
NVG_NOTUSED(imageFlags); |
|
||||||
return NULL; |
|
||||||
#endif |
|
||||||
} |
|
||||||
|
|
||||||
void nvgluBindFramebuffer(NVGLUframebuffer* fb) |
|
||||||
{ |
|
||||||
#ifdef NANOVG_FBO_VALID |
|
||||||
if (defaultFBO == -1) glGetIntegerv(GL_FRAMEBUFFER_BINDING, &defaultFBO); |
|
||||||
glBindFramebuffer(GL_FRAMEBUFFER, fb != NULL ? fb->fbo : defaultFBO); |
|
||||||
#else |
|
||||||
NVG_NOTUSED(fb); |
|
||||||
#endif |
|
||||||
} |
|
||||||
|
|
||||||
void nvgluDeleteFramebuffer(NVGLUframebuffer* fb) |
|
||||||
{ |
|
||||||
#ifdef NANOVG_FBO_VALID |
|
||||||
if (fb == NULL) return; |
|
||||||
if (fb->fbo != 0) |
|
||||||
glDeleteFramebuffers(1, &fb->fbo); |
|
||||||
if (fb->rbo != 0) |
|
||||||
glDeleteRenderbuffers(1, &fb->rbo); |
|
||||||
if (fb->image >= 0) |
|
||||||
nvgDeleteImage(fb->ctx, fb->image); |
|
||||||
fb->ctx = NULL; |
|
||||||
fb->fbo = 0; |
|
||||||
fb->rbo = 0; |
|
||||||
fb->texture = 0; |
|
||||||
fb->image = -1; |
|
||||||
free(fb); |
|
||||||
#else |
|
||||||
NVG_NOTUSED(fb); |
|
||||||
#endif |
|
||||||
} |
|
||||||
|
|
||||||
#endif // NANOVG_GL_IMPLEMENTATION
|
|
||||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
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Reference in new issue