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4768331b3b
- Hue: Creates a result color with the luminance and saturation of the base color and the hue of the blend color. - Color: Creates a result color with the luminance of the base color and the hue and saturation of the blend color. This preserves the gray levels in the image and is useful for coloring monochrome images and for tinting color images. - Luminosity: reates a result color with the hue and saturation of the base color and the luminance of the blend color. This mode creates the inverse effect of Color mode. - Saturation: Creates a result color with the luminance and hue of the base color and the saturation of the blend color. Painting with this mode in an area with no (0) saturation (gray) causes no change. - HardMix: Adds the bottom & top. If the resulting sum for a channel is 255 or greater, it receives a value of 255; if less than 255, a value of 0. issue: https://github.com/thorvg/thorvg/issues/2701
186 lines
No EOL
7.3 KiB
C++
186 lines
No EOL
7.3 KiB
C++
/*
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* Copyright (c) 2020 - 2025 the ThorVG project. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "Example.h"
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/************************************************************************/
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/* ThorVG Drawing Contents */
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/************************************************************************/
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struct UserExample : tvgexam::Example
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{
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void blender(tvg::Canvas* canvas, const char* name, tvg::BlendMethod method, float x, float y, uint32_t* data)
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{
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auto text = tvg::Text::gen();
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text->font("Arial", 15);
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text->text(name);
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text->fill(255, 255, 255);
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text->translate(x + 20, y);
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canvas->push(text);
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//solid
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{
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auto bottom = tvg::Shape::gen();
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bottom->appendRect(20.0f + x, 25.0f + y, 100.0f, 100.0f, 10.0f, 10.0f);
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bottom->fill(255, 255, 0);
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canvas->push(bottom);
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auto top = tvg::Shape::gen();
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top->appendRect(45.0f + x, 50.0f + y, 100.0f, 100.0f, 10.0f, 10.0f);
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top->fill(0, 255, 255);
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top->blend(method);
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canvas->push(top);
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}
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//solid (half transparent)
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{
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auto bottom = tvg::Shape::gen();
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bottom->appendRect(170.0f + x, 25.0f + y, 100.0f, 100.0f, 10.0f, 10.0f);
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bottom->fill(255, 255, 0, 127);
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canvas->push(bottom);
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auto top = tvg::Shape::gen();
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top->appendRect(195.0f + x, 50.0f + y, 100.0f, 100.0f, 10.0f, 10.0f);
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top->fill(0, 255, 255, 127);
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top->blend(method);
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canvas->push(top);
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}
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//gradient blending
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{
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tvg::Fill::ColorStop colorStops[2];
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colorStops[0] = {0, 255, 0, 255, 255};
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colorStops[1] = {1, 0, 255, 0, 127};
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auto fill = tvg::LinearGradient::gen();
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fill->linear(325.0f + x, 25.0f + y, 425.0f + x, 125.0f + y);
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fill->colorStops(colorStops, 2);
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auto bottom = tvg::Shape::gen();
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bottom->appendRect(325.0f + x, 25.0f + y, 100.0f, 100.0f, 10.0f, 10.0f);
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bottom->fill(fill);
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canvas->push(bottom);
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auto fill2 = tvg::LinearGradient::gen();
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fill2->linear(350.0f + x, 50.0f + y, 450.0f + x, 150.0f + y);
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fill2->colorStops(colorStops, 2);
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auto top = tvg::Shape::gen();
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top->appendRect(350.0f + x, 50.0f + y, 100.0f, 100.0f, 10.0f, 10.0f);
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top->fill(fill2);
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top->blend(method);
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canvas->push(top);
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}
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//image
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{
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auto bottom = tvg::Picture::gen();
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bottom->load(data, 200, 300, tvg::ColorSpace::ARGB8888, true);
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bottom->translate(475 + x, 25.0f + y);
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bottom->scale(0.35f);
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canvas->push(bottom);
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auto top = bottom->duplicate();
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top->translate(500.0f + x, 50.0f + y);
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top->rotate(-10.0f);
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top->blend(method);
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canvas->push(top);
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}
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//scene
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{
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auto bottom = tvg::Picture::gen();
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bottom->load(EXAMPLE_DIR"/svg/tiger.svg");
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bottom->translate(600.0f + x, 25.0f + y);
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bottom->scale(0.11f);
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canvas->push(bottom);
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auto top = bottom->duplicate();
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top->translate(625.0f + x, 50.0f + y);
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top->blend(method);
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canvas->push(top);
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}
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//scene (half transparent)
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{
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auto bottom = tvg::Picture::gen();
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bottom->load(EXAMPLE_DIR"/svg/tiger.svg");
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bottom->translate(750.0f + x, 25.0f + y);
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bottom->scale(0.11f);
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bottom->opacity(127);
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canvas->push(bottom);
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auto top = bottom->duplicate();
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top->translate(775.0f + x, 50.0f + y);
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top->blend(method);
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canvas->push(top);
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}
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}
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bool content(tvg::Canvas* canvas, uint32_t w, uint32_t h) override
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{
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if (!tvgexam::verify(tvg::Text::load(EXAMPLE_DIR"/font/Arial.ttf"))) return false;
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//Prepare Image
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string path(EXAMPLE_DIR"/image/rawimage_200x300.raw");
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ifstream file(path, ios::binary);
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if (!file.is_open()) return false;
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auto data = (uint32_t*)malloc(sizeof(uint32_t) * (200*300));
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file.read(reinterpret_cast<char *>(data), sizeof (uint32_t) * 200 * 300);
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file.close();
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blender(canvas, "Normal", tvg::BlendMethod::Normal, 0.0f, 0.0f, data);
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blender(canvas, "Multiply", tvg::BlendMethod::Multiply, 0.0f, 150.0f, data);
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blender(canvas, "Screen", tvg::BlendMethod::Screen, 0.0f, 300.0f, data);
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blender(canvas, "Overlay", tvg::BlendMethod::Overlay, 0.0f, 450.0f, data);
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blender(canvas, "Darken", tvg::BlendMethod::Darken, 0.f, 600.0f, data);
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blender(canvas, "Lighten", tvg::BlendMethod::Lighten, 0.0f, 750.0f, data);
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blender(canvas, "ColorDodge", tvg::BlendMethod::ColorDodge, 0.0f, 900.0f, data);
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blender(canvas, "ColorBurn", tvg::BlendMethod::ColorBurn, 0.0f, 1050.0f, data);
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blender(canvas, "HardLight", tvg::BlendMethod::HardLight, 0.0f, 1200.0f, data);
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blender(canvas, "SoftLight", tvg::BlendMethod::SoftLight, 900.0f, 0.0f, data);
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blender(canvas, "Difference", tvg::BlendMethod::Difference, 900.0f, 150.0f, data);
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blender(canvas, "Exclusion", tvg::BlendMethod::Exclusion, 900.0f, 300.0f, data);
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blender(canvas, "Hue", tvg::BlendMethod::Hue, 900.0f, 450.0f, data);
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blender(canvas, "Saturation", tvg::BlendMethod::Saturation, 900.0f, 600.0f, data);
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blender(canvas, "Color", tvg::BlendMethod::Color, 900.0f, 750.0f, data);
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blender(canvas, "Luminosity", tvg::BlendMethod::Luminosity, 900.0f, 900.0f, data);
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blender(canvas, "Add", tvg::BlendMethod::Add, 900.0f, 1050.0f, data);
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blender(canvas, "HardMix", tvg::BlendMethod::HardMix, 900.0f, 1200.0f, data);
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free(data);
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return true;
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}
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};
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/************************************************************************/
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/* Entry Point */
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/************************************************************************/
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int main(int argc, char **argv)
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{
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return tvgexam::main(new UserExample, argc, argv, true, 1800, 1380);
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} |