thorvg/examples/Text.cpp
Mira Grudzinska c6bd09648c examples: ensure the file is closed
In case of an error during memory allocation
for file data, the file was not closed.
2024-06-17 11:45:25 +09:00

288 lines
9.1 KiB
C++

/*
* Copyright (c) 2023 - 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 "Common.h"
#include <fstream>
/************************************************************************/
/* Drawing Commands */
/************************************************************************/
void tvgDrawCmds(tvg::Canvas* canvas)
{
if (!canvas) return;
//Background
auto shape = tvg::Shape::gen();
shape->appendRect(0, 0, WIDTH, HEIGHT);
shape->fill(75, 75, 75);
canvas->push(std::move(shape));
//Load a necessary font data.
//The loaded font will be released when the Initializer::term() is called.
//Otherwise, you can immedately unload the font data.
//Please check Text::unload() APIs.
if (tvg::Text::load(EXAMPLE_DIR"/font/Arial.ttf") != tvg::Result::Success) {
cout << "TTF is not supported. Did you enable TTF Loader?" << endl;
return;
}
if (tvg::Text::load(EXAMPLE_DIR"/font/NanumGothicCoding.ttf") != tvg::Result::Success) {
cout << "TTF is not supported. Did you enable TTF Loader?" << endl;
return;
}
//Load from memory
ifstream file(EXAMPLE_DIR"/font/SentyCloud.ttf", ios::binary);
if (!file.is_open()) return;
file.seekg(0, std::ios::end);
auto size = file.tellg();
file.seekg(0, std::ios::beg);
auto data = (char*)malloc(size);
if (data && file.read(data, size)) {
if (tvg::Text::load("SentyCloud", data, size, "ttf", true) != tvg::Result::Success) {
cout << "Error while loading TTF from memory. Did you enable TTF Loader?" << endl;
}
}
file.close();
free(data);
auto text = tvg::Text::gen();
text->font("Arial", 80);
text->text("THORVG Text");
text->fill(255, 255, 255);
canvas->push(std::move(text));
auto text2 = tvg::Text::gen();
text2->font("Arial", 30, "italic");
text2->text("Font = \"Arial\", Size = 40, Style=Italic");
text2->translate(0, 150);
text2->fill(255, 255, 255);
canvas->push(std::move(text2));
auto text3 = tvg::Text::gen();
text3->font("Arial", 40);
text3->text("Kerning Test: VA, AV, TJ, JT");
text3->fill(255, 255, 255);
text3->translate(0, 225);
canvas->push(std::move(text3));
auto text4 = tvg::Text::gen();
text4->font("Arial", 25);
text4->text("Purple Text");
text4->fill(255, 0, 255);
text4->translate(0, 310);
canvas->push(std::move(text4));
auto text5 = tvg::Text::gen();
text5->font("Arial", 25);
text5->text("Gray Text");
text5->fill(150, 150, 150);
text5->translate(220, 310);
canvas->push(std::move(text5));
auto text6 = tvg::Text::gen();
text6->font("Arial", 25);
text6->text("Yellow Text");
text6->fill(255, 255, 0);
text6->translate(400, 310);
canvas->push(std::move(text6));
auto text7 = tvg::Text::gen();
text7->font("Arial", 15);
text7->text("Transformed Text - 30'");
text7->fill(0, 0, 0);
text7->translate(600, 400);
text7->rotate(30);
canvas->push(std::move(text7));
auto text8 = tvg::Text::gen();
text8->font("Arial", 15);
text8->fill(0, 0, 0);
text8->text("Transformed Text - 90'");
text8->translate(600, 400);
text8->rotate(90);
canvas->push(std::move(text8));
auto text9 = tvg::Text::gen();
text9->font("Arial", 15);
text9->fill(0, 0, 0);
text9->text("Transformed Text - 180'");
text9->translate(800, 400);
text9->rotate(180);
canvas->push(std::move(text9));
//gradient texts
float x, y, w, h;
auto text10 = tvg::Text::gen();
text10->font("Arial", 50);
text10->text("Linear Text");
text10->translate(0, 350);
text10->bounds(&x, &y, &w, &h);
//LinearGradient
auto fill = tvg::LinearGradient::gen();
fill->linear(x, y + h * 0.5f, x + w, y + h * 0.5f);
//Gradient Color Stops
tvg::Fill::ColorStop colorStops[3];
colorStops[0] = {0, 255, 0, 0, 255};
colorStops[1] = {0.5, 255, 255, 0, 255};
colorStops[2] = {1, 255, 255, 255, 255};
fill->colorStops(colorStops, 3);
text10->fill(std::move(fill));
canvas->push(std::move(text10));
auto text11 = tvg::Text::gen();
text11->font("NanumGothicCoding", 40);
text11->text("\xeb\x82\x98\xeb\x88\x94\xea\xb3\xa0\xeb\x94\x95\xec\xbd\x94\xeb\x94\xa9\x28\x55\x54\x46\x2d\x38\x29");
text11->translate(0, 450);
text11->bounds(&x, &y, &w, &h);
//LinearGradient
auto fill2 = tvg::RadialGradient::gen();
fill2->radial(x + w * 0.5f, y + h * 0.5f, w * 0.5f);
//Gradient Color Stops
tvg::Fill::ColorStop colorStops2[3];
colorStops2[0] = {0, 0, 255, 255, 255};
colorStops2[1] = {0.5, 255, 255, 0, 255};
colorStops2[2] = {1, 255, 255, 255, 255};
fill2->colorStops(colorStops2, 3);
text11->fill(std::move(fill2));
canvas->push(std::move(text11));
auto text12 = tvg::Text::gen();
text12->font("SentyCloud", 50);
text12->fill(255, 25, 25);
text12->text("\xe4\xb8\x8d\xe5\x88\xb0\xe9\x95\xbf\xe5\x9f\x8e\xe9\x9d\x9e\xe5\xa5\xbd\xe6\xb1\x89\xef\xbc\x81");
text12->translate(0, 525);
canvas->push(std::move(text12));
}
/************************************************************************/
/* Sw Engine Test Code */
/************************************************************************/
static unique_ptr<tvg::SwCanvas> swCanvas;
void initSwView(uint32_t* buffer)
{
//Create a Canvas
swCanvas = tvg::SwCanvas::gen();
swCanvas->target(buffer, WIDTH, WIDTH, HEIGHT, tvg::SwCanvas::ARGB8888);
/* Push the shape into the Canvas drawing list
When this shape is into the canvas list, the shape could update & prepare
internal data asynchronously for coming rendering.
Canvas keeps this shape node unless user call canvas->clear() */
tvgDrawCmds(swCanvas.get());
}
void drawSwView(void* data, Eo* obj)
{
if (swCanvas->draw() == tvg::Result::Success) {
swCanvas->sync();
}
}
/************************************************************************/
/* GL Engine Test Code */
/************************************************************************/
static unique_ptr<tvg::GlCanvas> glCanvas;
void initGlView(Evas_Object *obj)
{
//Create a Canvas
glCanvas = tvg::GlCanvas::gen();
//Get the drawing target id
int32_t targetId;
auto gl = elm_glview_gl_api_get(obj);
gl->glGetIntegerv(GL_FRAMEBUFFER_BINDING, &targetId);
glCanvas->target(targetId, WIDTH, HEIGHT);
/* Push the shape into the Canvas drawing list
When this shape is into the canvas list, the shape could update & prepare
internal data asynchronously for coming rendering.
Canvas keeps this shape node unless user call canvas->clear() */
tvgDrawCmds(glCanvas.get());
}
void drawGlView(Evas_Object *obj)
{
auto gl = elm_glview_gl_api_get(obj);
gl->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
gl->glClear(GL_COLOR_BUFFER_BIT);
if (glCanvas->draw() == tvg::Result::Success) {
glCanvas->sync();
}
}
/************************************************************************/
/* Main Code */
/************************************************************************/
int main(int argc, char **argv)
{
auto tvgEngine = tvg::CanvasEngine::Sw;
if (argc > 1) {
if (!strcmp(argv[1], "gl")) tvgEngine = tvg::CanvasEngine::Gl;
}
//Threads Count
auto threads = std::thread::hardware_concurrency();
if (threads > 0) --threads; //Allow the designated main thread capacity
//Initialize ThorVG Engine
if (tvg::Initializer::init(threads) == tvg::Result::Success) {
elm_init(argc, argv);
if (tvgEngine == tvg::CanvasEngine::Sw) {
createSwView();
} else {
createGlView();
}
elm_run();
elm_shutdown();
//Terminate ThorVG Engine
tvg::Initializer::term();
} else {
cout << "engine is not supported" << endl;
}
return 0;
}