thorvg/test/testPaint.cpp
Hermet Park 39b0f87cb3 api: revise the canvas update() API
Removed the paint parameter previously used to forcibly
update a single paint.

This behavior was unsafe in ThorVG, as a single paint
object may be connected to others through the scene graph.

Now, the canvas engine is responsible for properly updating
all damaged paints as needed, allowing the user to simply
call update() in any case.

API Modifications:

C++ API:
 * Result Canvas::update(Paint* paint) -> Result Canvas::update()

CAPI:
 - tvg_canvas_update_paint()

Issue: https://github.com/thorvg/thorvg/issues/3116
2025-06-16 10:43:13 +09:00

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C++

/*
* Copyright (c) 2021 - 2025 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 <thorvg.h>
#include "config.h"
#include "catch.hpp"
using namespace tvg;
using namespace std;
TEST_CASE("Custom Transformation", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
//Verify default transform
Matrix m1 = shape->transform();
REQUIRE(m1.e11 == Approx(1.0f).margin(0.000001));
REQUIRE(m1.e12 == Approx(0).margin(0.000001));
REQUIRE(m1.e13 == Approx(0).margin(0.000001));
REQUIRE(m1.e21 == Approx(0).margin(0.000001));
REQUIRE(m1.e22 == Approx(1.0f).margin(0.000001));
REQUIRE(m1.e23 == Approx(0).margin(0.000001));
REQUIRE(m1.e31 == Approx(0).margin(0.000001));
REQUIRE(m1.e32 == Approx(0).margin(0.000001));
REQUIRE(m1.e33 == Approx(1.0f).margin(0.000001));
//Custom transform
auto m2 = Matrix{1.0f, 2.0f, 3.0f, 4.0f, 0.0f, -4.0f, -3.0f, -2.0f, -1.0f};
REQUIRE(shape->transform(m2) == Result::Success);
auto m3 = shape->transform();
REQUIRE(m2.e11 == Approx(m3.e11).margin(0.000001));
REQUIRE(m2.e12 == Approx(m3.e12).margin(0.000001));
REQUIRE(m2.e13 == Approx(m3.e13).margin(0.000001));
REQUIRE(m2.e21 == Approx(m3.e21).margin(0.000001));
REQUIRE(m2.e22 == Approx(m3.e22).margin(0.000001));
REQUIRE(m2.e23 == Approx(m3.e23).margin(0.000001));
REQUIRE(m2.e31 == Approx(m3.e31).margin(0.000001));
REQUIRE(m2.e32 == Approx(m3.e32).margin(0.000001));
REQUIRE(m2.e33 == Approx(m3.e33).margin(0.000001));
//It's not allowed if the custom transform is applied.
REQUIRE(shape->translate(155.0f, -155.0f) == Result::InsufficientCondition);
REQUIRE(shape->scale(4.7f) == Result::InsufficientCondition);
REQUIRE(shape->rotate(45.0f) == Result::InsufficientCondition);
//Verify Transform is not modified
auto m4 = shape->transform();
REQUIRE(m2.e11 == Approx(m4.e11).margin(0.000001));
REQUIRE(m2.e12 == Approx(m4.e12).margin(0.000001));
REQUIRE(m2.e13 == Approx(m4.e13).margin(0.000001));
REQUIRE(m2.e21 == Approx(m4.e21).margin(0.000001));
REQUIRE(m2.e22 == Approx(m4.e22).margin(0.000001));
REQUIRE(m2.e23 == Approx(m4.e23).margin(0.000001));
REQUIRE(m2.e31 == Approx(m4.e31).margin(0.000001));
REQUIRE(m2.e32 == Approx(m4.e32).margin(0.000001));
REQUIRE(m2.e33 == Approx(m4.e33).margin(0.000001));
}
TEST_CASE("Basic Transformation", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
REQUIRE(shape->translate(155.0f, -155.0f) == Result::Success);
REQUIRE(shape->rotate(45.0f) == Result::Success);
REQUIRE(shape->scale(4.7f) == Result::Success);
auto m = shape->transform();
REQUIRE(m.e11 == Approx(3.323402f).margin(0.000001));
REQUIRE(m.e12 == Approx(-3.323401f).margin(0.000001));
REQUIRE(m.e13 == Approx(155.0f).margin(0.000001));
REQUIRE(m.e21 == Approx(3.323401f).margin(0.000001));
REQUIRE(m.e22 == Approx(3.323402f).margin(0.000001));
REQUIRE(m.e23 == Approx(-155.0f).margin(0.000001));
REQUIRE(m.e31 == Approx(0).margin(0.000001));
REQUIRE(m.e32 == Approx(0).margin(0.000001));
REQUIRE(m.e33 == Approx(1).margin(0.000001));
}
TEST_CASE("Opacity", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
REQUIRE(shape->opacity() == 255);
REQUIRE(shape->opacity(155) == Result::Success);
REQUIRE(shape->opacity() == 155);
REQUIRE(shape->opacity(-1) == Result::Success);
REQUIRE(shape->opacity() == 255);
REQUIRE(shape->opacity(0) == Result::Success);
REQUIRE(shape->opacity() == 0);
}
TEST_CASE("Bounding Box", "[tvgPaint]")
{
Initializer::init(0);
auto canvas = unique_ptr<SwCanvas>(SwCanvas::gen());
uint32_t buffer[100*100];
canvas->target(buffer, 100, 100, 100, ColorSpace::ABGR8888);
auto shape = Shape::gen();
canvas->push(shape);
canvas->sync();
//Negative
float x = 0, y = 0, w = 0, h = 0;
REQUIRE(shape->bounds(&x, &y, &w, &h) == Result::InsufficientCondition);
//Case 1
REQUIRE(shape->appendRect(0.0f, 10.0f, 20.0f, 100.0f, 50.0f, 50.0f) == Result::Success);
REQUIRE(shape->translate(100.0f, 111.0f) == Result::Success);
REQUIRE(shape->bounds(&x, &y, &w, &h) == Result::Success);
REQUIRE(x == 100.0f);
REQUIRE(y == 121.0f);
REQUIRE(w == 20.0f);
REQUIRE(h == 100.0f);
REQUIRE(canvas->update() == Result::Success);
Point pts[4];
REQUIRE(shape->bounds(pts) == Result::Success);
REQUIRE(pts[0].x == 100.0f);
REQUIRE(pts[3].x == 100.0f);
REQUIRE(pts[0].y == 121.0f);
REQUIRE(pts[1].y == 121.0f);
REQUIRE(pts[1].x == 120.0f);
REQUIRE(pts[2].x == 120.0f);
REQUIRE(pts[2].y == 221.0f);
REQUIRE(pts[3].y == 221.0f);
//Case 2
REQUIRE(shape->reset() == Result::Success);
REQUIRE(shape->moveTo(0.0f, 10.0f) == Result::Success);
REQUIRE(shape->lineTo(20.0f, 210.0f) == Result::Success);
auto identity = Matrix{1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f};
REQUIRE(shape->transform(identity) == Result::Success);
REQUIRE(shape->bounds(&x, &y, &w, &h) == Result::Success);
REQUIRE(x == 0.0f);
REQUIRE(y == 10.0f);
REQUIRE(w == 20.0f);
REQUIRE(h == 200.0f);
REQUIRE(canvas->update() == Result::Success);
REQUIRE(shape->bounds(pts) == Result::Success);
REQUIRE(pts[0].x == 0.0f);
REQUIRE(pts[3].x == 0.0f);
REQUIRE(pts[0].y == 10.0f);
REQUIRE(pts[1].y == 10.0f);
REQUIRE(pts[1].x == 20.0f);
REQUIRE(pts[2].x == 20.0f);
REQUIRE(pts[2].y == 210.0f);
REQUIRE(pts[3].y == 210.0f);
Initializer::term();
}
TEST_CASE("Duplication", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
//Setup paint properties
REQUIRE(shape->opacity(0) == Result::Success);
REQUIRE(shape->translate(200.0f, 100.0f) == Result::Success);
REQUIRE(shape->scale(2.2f) == Result::Success);
REQUIRE(shape->rotate(90.0f) == Result::Success);
auto comp = Shape::gen();
REQUIRE(comp);
REQUIRE(shape->clip(comp) == Result::Success);
//Duplication
auto dup = unique_ptr<Paint>(shape->duplicate());
REQUIRE(dup);
//Compare properties
REQUIRE(dup->opacity() == 0);
auto m = shape->transform();
REQUIRE(m.e11 == Approx(0.0f).margin(0.000001));
REQUIRE(m.e12 == Approx(-2.2f).margin(0.000001));
REQUIRE(m.e13 == Approx(200.0f).margin(0.000001));
REQUIRE(m.e21 == Approx(2.2f).margin(0.000001));
REQUIRE(m.e22 == Approx(0.0f).margin(0.000001));
REQUIRE(m.e23 == Approx(100.0f).margin(0.000001));
REQUIRE(m.e31 == Approx(0.0f).margin(0.000001));
REQUIRE(m.e32 == Approx(0.0f).margin(0.000001));
REQUIRE(m.e33 == Approx(1.0f).margin(0.000001));
}
TEST_CASE("Composition", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
//Negative
REQUIRE(shape->mask(nullptr) == MaskMethod::None);
//Clipping
auto comp = Shape::gen();
REQUIRE(shape->clip() == nullptr);
REQUIRE(shape->clip(comp) == Result::Success);
REQUIRE(shape->clip() == comp);
//AlphaMask
comp = Shape::gen();
REQUIRE(shape->mask(comp, MaskMethod::Alpha) == Result::Success);
const Paint* comp2 = nullptr;
REQUIRE(shape->mask(&comp2) == MaskMethod::Alpha);
REQUIRE(comp == comp2);
//InvAlphaMask
comp = Shape::gen();
REQUIRE(shape->mask(comp, MaskMethod::InvAlpha) == Result::Success);
REQUIRE(shape->mask(&comp2) == MaskMethod::InvAlpha);
REQUIRE(comp == comp2);
//LumaMask
comp = Shape::gen();
REQUIRE(shape->mask(comp, MaskMethod::Luma) == Result::Success);
REQUIRE(shape->mask(&comp2) == MaskMethod::Luma);
REQUIRE(comp == comp2);
//InvLumaMask
comp = Shape::gen();
REQUIRE(shape->mask(comp, MaskMethod::InvLuma) == Result::Success);
REQUIRE(shape->mask(&comp2) == MaskMethod::InvLuma);
REQUIRE(comp == comp2);
}
TEST_CASE("Blending", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
//Add
REQUIRE(shape->blend(BlendMethod::Add) == Result::Success);
//Screen
REQUIRE(shape->blend(BlendMethod::Screen) == Result::Success);
//Multiply
REQUIRE(shape->blend(BlendMethod::Multiply) == Result::Success);
//Overlay
REQUIRE(shape->blend(BlendMethod::Overlay) == Result::Success);
//Difference
REQUIRE(shape->blend(BlendMethod::Difference) == Result::Success);
//Exclusion
REQUIRE(shape->blend(BlendMethod::Exclusion) == Result::Success);
//Darken
REQUIRE(shape->blend(BlendMethod::Darken) == Result::Success);
//Lighten
REQUIRE(shape->blend(BlendMethod::Lighten) == Result::Success);
//ColorDodge
REQUIRE(shape->blend(BlendMethod::ColorDodge) == Result::Success);
//ColorBurn
REQUIRE(shape->blend(BlendMethod::ColorBurn) == Result::Success);
//HardLight
REQUIRE(shape->blend(BlendMethod::HardLight) == Result::Success);
//SoftLight
REQUIRE(shape->blend(BlendMethod::SoftLight) == Result::Success);
}
TEST_CASE("Refernce Count", "[tvgPaint]")
{
auto shape = Shape::gen();
REQUIRE(shape->refCnt() == 0);
REQUIRE(shape->unref(false) == 0);
REQUIRE(shape->ref() == 1);
REQUIRE(shape->ref() == 2);
REQUIRE(shape->ref() == 3);
REQUIRE(shape->unref() == 2);
REQUIRE(shape->unref() == 1);
REQUIRE(shape->unref() == 0);
Initializer::init(0);
auto canvas = unique_ptr<SwCanvas>(SwCanvas::gen());
shape = Shape::gen();
REQUIRE(shape->ref() == 1);
canvas->push(shape);
REQUIRE(shape->refCnt() == 2);
REQUIRE(shape->unref() == 1);
shape = Shape::gen();
REQUIRE(shape->ref() == 1);
auto scene = Scene::gen();
scene->push(shape);
canvas->push(scene);
REQUIRE(shape->refCnt() == 2);
REQUIRE(shape->unref() == 1);
shape = Shape::gen();
REQUIRE(shape->ref() == 1);
scene = Scene::gen();
scene->push(shape);
scene->remove();
canvas->push(scene);
REQUIRE(shape->unref() == 0);
Initializer::term();
}