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Add theming test program source

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ws909 2023-01-25 19:53:15 +01:00
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commit da9e6dac24
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//========================================================================
// Theming test program
// Copyright (c) Camilla Löwy <elmindreda@glfw.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.
//
//========================================================================
//
// This program is used to test the theming features.
//
//========================================================================
#define GLAD_GL_IMPLEMENTATION
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
const unsigned char theme_colors[6][4] =
{
{ 0, 0, 0, 255 }, // black
{ 255, 0, 0, 255 }, // red
{ 0, 255, 0, 255 }, // green
{ 0, 0, 255, 255 }, // blue
{ 255, 255, 255, 255 }, // white
{ 128, 128, 128, 255 } // gray (no theme color)
};
static int cur_theme_color = 0;
static GLFWtheme theme;
static void set_theme(GLFWwindow* window, int theme_color)
{
memcpy(theme.color, theme_colors[theme_color], 4);
if (theme_color == 6)
{
theme.flags &= ~GLFW_THEME_FLAG_HAS_COLOR;
} else
{
theme.flags |= GLFW_THEME_FLAG_HAS_COLOR;
}
const char* title;
switch (theme.baseTheme) {
case GLFW_BASE_THEME_DEFAULT:
title = "Default theme";
break;
case GLFW_BASE_THEME_LIGHT:
title = "Light theme";
break;
case GLFW_BASE_THEME_DARK:
title = "Dark theme";
break;
}
glfwSetWindowTitle(window, title);
glfwSetTheme(window, &theme);
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_0:
glfwSetWindowTitle(window, "Default theme (NULL)");
glfwSetTheme(window, NULL);
break;
case GLFW_KEY_1:
theme.baseTheme = GLFW_BASE_THEME_DEFAULT;
set_theme(window, cur_theme_color);
break;
case GLFW_KEY_2:
theme.baseTheme = GLFW_BASE_THEME_LIGHT;
set_theme(window, cur_theme_color);
break;
case GLFW_KEY_3:
theme.baseTheme = GLFW_BASE_THEME_DARK;
set_theme(window, cur_theme_color);
break;
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
case GLFW_KEY_SPACE:
cur_theme_color = (cur_theme_color + 1) % 6;
set_theme(window, cur_theme_color);
break;
}
}
int main(int argc, char** argv)
{
GLFWwindow* window;
if (!glfwInit())
{
fprintf(stderr, "Failed to initialize GLFW\n");
exit(EXIT_FAILURE);
}
window = glfwCreateWindow(200, 200, "Window Icon", NULL, NULL);
if (!window)
{
glfwTerminate();
fprintf(stderr, "Failed to open GLFW window\n");
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSetKeyCallback(window, key_callback);
theme.baseTheme = GLFW_BASE_THEME_DEFAULT;
theme.flags = 0;
theme.color[0] = 0;
theme.color[1] = 0;
theme.color[2] = 0;
theme.color[3] = 0;
set_theme(window, cur_theme_color);
while (!glfwWindowShouldClose(window))
{
glClearColor(
theme_colors[cur_theme_color][0] / 255.0f,
theme_colors[cur_theme_color][1] / 255.0f,
theme_colors[cur_theme_color][2] / 255.0f,
theme_colors[cur_theme_color][3] / 255.0f
);
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwWaitEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}