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/*
* Test program for Allegro.
*
* Constrains the window to a minimum and or maximum.
*/
#include "allegro5/allegro.h"
#include "allegro5/allegro_image.h"
#include "allegro5/allegro_font.h"
#include "common.c"
int main(int argc, char **argv)
{
ALLEGRO_DISPLAY *display;
ALLEGRO_BITMAP *bmp;
ALLEGRO_FONT *f;
ALLEGRO_EVENT_QUEUE *queue;
ALLEGRO_EVENT event;
bool redraw;
int min_w, min_h, max_w, max_h;
int ret_min_w, ret_min_h, ret_max_w, ret_max_h;
bool constr_min_w, constr_min_h, constr_max_w, constr_max_h;
(void)argc;
(void)argv;
if (!al_init()) {
abort_example("Could not init Allegro.\n");
}
al_install_keyboard();
al_init_image_addon();
al_init_font_addon();
al_set_new_display_flags(ALLEGRO_RESIZABLE |
ALLEGRO_GENERATE_EXPOSE_EVENTS);
display = al_create_display(640, 480);
if (!display) {
abort_example("Unable to set any graphic mode\n");
}
bmp = al_load_bitmap("data/mysha.pcx");
if (!bmp) {
abort_example("Unable to load image\n");
}
f = al_load_font("data/a4_font.tga", 0, 0);
if (!f) {
abort_example("Failed to load a4_font.tga\n");
}
min_w = 640;
min_h = 480;
max_w = 800;
max_h = 600;
constr_min_w = constr_min_h = constr_max_w = constr_max_h = true;
if (!al_set_window_constraints(
display,
constr_min_w ? min_w : 0,
constr_min_h ? min_h : 0,
constr_max_w ? max_w : 0,
constr_max_h ? max_h : 0)) {
abort_example("Unable to set window constraints.\n");
}
al_apply_window_constraints(display, true);
queue = al_create_event_queue();
al_register_event_source(queue, al_get_display_event_source(display));
al_register_event_source(queue, al_get_keyboard_event_source());
redraw = true;
while (true) {
if (redraw && al_is_event_queue_empty(queue)) {
al_clear_to_color(al_map_rgb(255, 0, 0));
al_draw_scaled_bitmap(bmp,
0, 0, al_get_bitmap_width(bmp), al_get_bitmap_height(bmp),
0, 0, al_get_display_width(display), al_get_display_height(display),
0);
/* Display screen resolution */
al_draw_textf(f, al_map_rgb(255, 255, 255), 0, 0, 0,
"Resolution: %dx%d",
al_get_display_width(display), al_get_display_height(display));
if (!al_get_window_constraints(display, &ret_min_w, &ret_min_h,
&ret_max_w, &ret_max_h))
{
abort_example("Unable to get window constraints\n");
}
al_draw_textf(f, al_map_rgb(255, 255, 255), 0,
al_get_font_line_height(f), 0,
"Min Width: %d, Min Height: %d, Max Width: %d, Max Height: %d",
ret_min_w, ret_min_h, ret_max_w, ret_max_h);
al_draw_textf(f, al_map_rgb(255, 255, 255), 0,
al_get_font_line_height(f) * 2,0,
"Toggle Restriction: Min Width: Z, Min Height: X, Max Width: C, Max Height: V");
al_flip_display();
redraw = false;
}
al_wait_for_event(queue, &event);
if (event.type == ALLEGRO_EVENT_DISPLAY_RESIZE) {
al_acknowledge_resize(event.display.source);
redraw = true;
}
if (event.type == ALLEGRO_EVENT_DISPLAY_EXPOSE) {
redraw = true;
}
if (event.type == ALLEGRO_EVENT_KEY_DOWN) {
if (event.keyboard.keycode == ALLEGRO_KEY_ESCAPE) {
break;
}
else if (event.keyboard.keycode == ALLEGRO_KEY_Z) {
constr_min_w = ! constr_min_w;
}
else if (event.keyboard.keycode == ALLEGRO_KEY_X) {
constr_min_h = ! constr_min_h;
}
else if (event.keyboard.keycode == ALLEGRO_KEY_C) {
constr_max_w = ! constr_max_w;
}
else if (event.keyboard.keycode == ALLEGRO_KEY_V) {
constr_max_h = ! constr_max_h;
}
redraw = true;
if (!al_set_window_constraints(display,
constr_min_w ? min_w : 0,
constr_min_h ? min_h : 0,
constr_max_w ? max_w : 0,
constr_max_h ? max_h : 0)) {
abort_example("Unable to set window constraints.\n");
}
al_apply_window_constraints(display, true);
}
if (event.type == ALLEGRO_EVENT_DISPLAY_CLOSE) {
break;
}
}
al_destroy_bitmap(bmp);
al_destroy_display(display);
return 0;
}
/* vim: set sts=3 sw=3 et: */
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