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thorvg/examples/GradientStroke.cpp
Hermet Park ed01ef717e api: revise the spec 
Remove the requirement for unique_ptr in the function prototypes.
This change will simplify the API usage, making it more streamlined
and user-friendly. However, memory management will now be the
responsibility of the user.

C++ API Modification:
- Result Paint::mask(std::unique_ptr<Paint> target, MaskMethod method) -> Result Paint::mask(Paint* target, MaskMethod method)
- Result Paint::clip(std::unique_ptr<Paint> clipper) -> Result Paint::clip(Paint* clipper)
- virtual Result Canvas::push(std::unique_ptr<Paint> paint) -> virtual Result Canvas::push(Paint* paint)
- std::unique_ptr<LinearGradient> LinearGradient::gen() -> LinearGradient* LinearGradient::gen()
- std::unique_ptr<RadialGradient> RadialGradient::gen() -> RadialGradient* RadialGradient::gen()
- Result Shape::strokeFill(std::unique_ptr<Fill> f) -> Result Shape::strokeFill(Fill* f)
- Result Shape::fill(std::unique_ptr<Fill> f) -> Result Shape::fill(Fill* f)
- std::unique_ptr<Shape> Shape::gen() -> Shape* Shape::gen()
- std::unique_ptr<Picture> Picture::gen() -> Result Picture::push(Paint* paint)
- std::unique_ptr<Scene> Scene::gen() -> Scene* Scene::gen()
- Result Text::fill(std::unique_ptr<Fill> f) -> Result Text::fill(Fill* f)
- std::unique_ptr<Text> Text::gen() -> Text* Text::gen()
- std::unique_ptr<SwCanvas> SwCanvas::gen() -> SwCanvas* SwCanvas::gen()
- std::unique_ptr<GlCanvas> GlCanvas::gen() -> GlCanvas* GlCanvas::gen()
- std::unique_ptr<Animation> Animation::gen() -> Animation* Animation::gen()
- Result Saver::background(std::unique_ptr<Paint> paint) -> Result Saver::background(Paint* paint)
- Result Saver::save(std::unique_ptr<Paint> paint, const char* filename, uint32_t quality = 100) -> Result Saver::save(Paint* paint, const char* filename, uint32_t quality = 100)
- std::unique_ptr<Saver> Saver::gen() -> Saver* Saver::gen()
- std::unique_ptr<Accessor> Accessor::gen() -> Accessor* Accessor::gen()

C++ API removal:
- template<typename T = tvg::Paint> std::unique_ptr<T> cast(Paint* paint)
- template<typename T = tvg::Paint> std::unique_ptr<T> cast(Paint* paint)

issue: https://github.com/thorvg/thorvg/issues
2024-11-09 12:29:15 +09:00

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/*
* Copyright (c) 2020 - 2024 the ThorVG project. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "Example.h"
/************************************************************************/
/* ThorVG Drawing Contents */
/************************************************************************/
struct UserExample : tvgexam::Example
{
bool content(tvg::Canvas* canvas, uint32_t w, uint32_t h) override
{
if (!canvas) return false;
tvg::Fill::ColorStop colorStops1[3];
colorStops1[0] = {0, 255, 0, 0, 150};
colorStops1[1] = {0.5, 0, 0, 255, 150};
colorStops1[2] = {1, 127, 0, 127, 150};
tvg::Fill::ColorStop colorStops2[2];
colorStops2[0] = {0.3, 255, 0, 0, 255};
colorStops2[1] = {1, 50, 0, 255, 155};
tvg::Fill::ColorStop colorStops3[2];
colorStops3[0] = {0, 0, 0, 255, 155};
colorStops3[1] = {1, 0, 255, 0, 155};
float dashPattern1[2] = {15, 15};
// linear gradient stroke + linear gradient fill
auto shape1 = tvg::Shape::gen();
shape1->moveTo(150, 100);
shape1->lineTo(200, 100);
shape1->lineTo(200, 150);
shape1->lineTo(300, 150);
shape1->lineTo(250, 200);
shape1->lineTo(200, 200);
shape1->lineTo(200, 250);
shape1->lineTo(150, 300);
shape1->lineTo(150, 200);
shape1->lineTo(100, 200);
shape1->lineTo(100, 150);
shape1->close();
shape1->strokeFill(0, 255, 0);
shape1->strokeWidth(20);
shape1->strokeJoin(tvg::StrokeJoin::Miter);
shape1->strokeCap(tvg::StrokeCap::Butt);
auto fillStroke1 = tvg::LinearGradient::gen();
fillStroke1->linear(100, 100, 250, 250);
fillStroke1->colorStops(colorStops1, 3);
shape1->strokeFill(fillStroke1);
auto fill1 = tvg::LinearGradient::gen();
fill1->linear(100, 100, 250, 250);
fill1->colorStops(colorStops1, 3);
shape1->fill(fill1);
canvas->push(shape1);
// radial gradient stroke + duplicate
auto shape2 = tvg::Shape::gen();
shape2->appendCircle(600, 175, 100, 60);
shape2->strokeWidth(80);
auto fillStroke2 = tvg::RadialGradient::gen();
fillStroke2->radial(600, 175, 100, 600, 175, 0);
fillStroke2->colorStops(colorStops2, 2);
shape2->strokeFill(fillStroke2);
auto shape3 = static_cast<tvg::Shape*>(shape2->duplicate());
shape3->translate(0, 200);
auto fillStroke3 = tvg::LinearGradient::gen();
fillStroke3->linear(500, 115, 700, 235);
fillStroke3->colorStops(colorStops3, 2);
shape3->strokeFill(fillStroke3);
auto shape4 = static_cast<tvg::Shape*>(shape2->duplicate());
shape4->translate(0, 400);
canvas->push(shape2);
canvas->push(shape3);
canvas->push(shape4);
// dashed gradient stroke
auto shape5 = tvg::Shape::gen();
shape5->appendRect(100, 500, 300, 300, 50, 80);
shape5->strokeWidth(20);
shape5->strokeDash(dashPattern1, 2);
shape5->strokeCap(tvg::StrokeCap::Butt);
auto fillStroke5 = tvg::LinearGradient::gen();
fillStroke5->linear(150, 450, 450, 750);
fillStroke5->colorStops(colorStops3, 2);
shape5->strokeFill(fillStroke5);
auto fill5 = tvg::LinearGradient::gen();
fill5->linear(150, 450, 450, 750);
fill5->colorStops(colorStops3, 2);
shape5->fill(fill5);
shape5->scale(0.8);
canvas->push(shape5);
return true;
}
};
/************************************************************************/
/* Entry Point */
/************************************************************************/
int main(int argc, char **argv)
{
return tvgexam::main(new UserExample, argc, argv);
}
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