ugui/test/main.c

#include <stdio.h>
#include <SDL2/SDL.h>

#include "../ugui.h"

int main(void)
{
	SDL_DisplayMode dm;

	SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
	SDL_EnableScreenSaver();
	SDL_EventState(SDL_DROPFILE, SDL_ENABLE);	
	SDL_EventState(SDL_DROPTEXT, SDL_ENABLE);

	SDL_GetDesktopDisplayMode(0, &dm);

#ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* Available since 2.0.8 */
	SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
#endif

#if SDL_VERSION_ATLEAST(2, 0, 5)
	SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");
#endif

	SDL_Window *w;
	w = SDL_CreateWindow("test", 
	                     SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
	                     dm.w*0.8, dm.h*0.8, 
			     SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI |
	                     SDL_WINDOW_OPENGL );

	//SDL_Surface *s;
	//s = SDL_GetWindowSurface(w);
	SDL_Renderer *r;
	r = SDL_CreateRenderer(w, -1, SDL_RENDERER_ACCELERATED);


	ug_vec2_t size, dsize;
	SDL_GetWindowSize(w, &size.w, &size.h);
	SDL_GL_GetDrawableSize(w, &dsize.w, &dsize.h);
	float scale = 1.0;
	scale = ((float)(size.w+size.h)/2)/((float)(dsize.w+dsize.h)/2);
	
	float dpi;
	int idx;
	idx = SDL_GetWindowDisplayIndex(w);
	SDL_GetDisplayDPI(idx, &dpi, NULL, NULL);


	ug_ctx_t *ctx = ug_ctx_new();
	ug_ctx_set_displayinfo(ctx, scale, dpi);
	ug_ctx_set_drawableregion(ctx, dsize);


	SDL_Event event;

	char button_map[] = {
		[SDL_BUTTON_LEFT   & 0xff] = UG_BTN_LEFT, 
		[SDL_BUTTON_MIDDLE & 0xff] = UG_BTN_MIDDLE, 
		[SDL_BUTTON_RIGHT  & 0xff] = UG_BTN_RIGHT, 
		[SDL_BUTTON_X1     & 0xff] = UG_BTN_4, 
		[SDL_BUTTON_X2     & 0xff] = UG_BTN_5, 
	};
	
	do {
	SDL_WaitEvent(&event);

		switch (event.type) {
		case SDL_WINDOWEVENT:
	        	switch (event.window.event) {
			case SDL_WINDOWEVENT_SHOWN:
				(SDL_Log("Window %d shown", event.window.windowID));
				break;
			case SDL_WINDOWEVENT_HIDDEN:
				(SDL_Log("Window %d hidden", event.window.windowID));
				break;
			case SDL_WINDOWEVENT_EXPOSED:
				(SDL_Log("Window %d exposed", event.window.windowID));
				break;
			case SDL_WINDOWEVENT_MOVED:
				(SDL_Log("Window %d moved to %d,%d",
				event.window.windowID, event.window.data1,
				event.window.data2));
				break;
			case SDL_WINDOWEVENT_RESIZED:
				(SDL_Log("Window %d resized to %dx%d",
				event.window.windowID, event.window.data1,
				event.window.data2));
				break;
			case SDL_WINDOWEVENT_SIZE_CHANGED:
				(SDL_Log("Window %d size changed to %dx%d",
				event.window.windowID, event.window.data1,
				event.window.data2));

				size.w = event.window.data1;
				size.h = event.window.data2;
				// surface is invalidated every time the window
				// is resized
				//s = SDL_GetWindowSurface(w);
				ug_ctx_set_drawableregion(ctx, size);

				break;
			case SDL_WINDOWEVENT_MINIMIZED:
				(SDL_Log("Window %d minimized", event.window.windowID));
				break;
			case SDL_WINDOWEVENT_MAXIMIZED:
				(SDL_Log("Window %d maximized", event.window.windowID));
				break;
			case SDL_WINDOWEVENT_RESTORED:
				(SDL_Log("Window %d restored", event.window.windowID));
				break;
			case SDL_WINDOWEVENT_ENTER:
				(SDL_Log("Mouse entered window %d",
					event.window.windowID));
				break;
			case SDL_WINDOWEVENT_LEAVE:
				(SDL_Log("Mouse left window %d", event.window.windowID));
				break;
			case SDL_WINDOWEVENT_FOCUS_GAINED:
				(SDL_Log("Window %d gained keyboard focus",
				event.window.windowID));
				break;
			case SDL_WINDOWEVENT_FOCUS_LOST:
				(SDL_Log("Window %d lost keyboard focus",
				event.window.windowID));
				break;
			case SDL_WINDOWEVENT_CLOSE:
				(SDL_Log("Window %d closed", event.window.windowID));
				break;
#if SDL_VERSION_ATLEAST(2, 0, 5)
			case SDL_WINDOWEVENT_TAKE_FOCUS:
				(SDL_Log("Window %d is offered a focus", event.window.windowID));
				break;
			case SDL_WINDOWEVENT_HIT_TEST:
				(SDL_Log("Window %d has a special hit test", event.window.windowID));
				break;
#endif
			default:
				(SDL_Log("Window %d got unknown event %d",
				event.window.windowID, event.window.event));
				break;
			}
			break;
		case SDL_QUIT:
			(printf("Quitting\n"));
			break;
		case SDL_MOUSEMOTION:

			ug_input_mousemove(ctx, event.motion.x, event.motion.y);

			break;
		case SDL_MOUSEBUTTONDOWN:
			ug_input_mousemove(ctx, event.button.x, event.button.y);
			ug_input_mousedown(ctx, button_map[event.button.button & 0xff]);

			break;
		case SDL_MOUSEBUTTONUP:

			ug_input_mousemove(ctx, event.button.x, event.button.y);
			ug_input_mouseup(ctx, button_map[event.button.button & 0xff]);

			break;
		default:
			(printf("Unknown event: %d\n", event.type));
			break;
		}


		ug_frame_begin(ctx);

		ug_container_floating(ctx, "stupid name", 
		                      (ug_rect_t){.x = 0, .y = 0, .w = 100, .h = 300});
		ug_container_floating(ctx, "better name", 
		                      (ug_rect_t){.x = -20, .y = -10, .w = 100, .h = 200});

		ug_frame_end(ctx);

		// fill background
		SDL_SetRenderDrawColor(r, 0, 0, 0, 0xff);
		SDL_RenderClear(r);
		for (int i = 0; i < ctx->cmd_stack.idx; i++) {
			ug_cmd_t cmd = ctx->cmd_stack.items[i];
			ug_color_t col = cmd.rect.color;
			SDL_Rect sr = {
				.x = cmd.rect.x,
				.y = cmd.rect.y,
				.w = cmd.rect.w,
				.h = cmd.rect.h,
			};
			printf("DRAWING: x=%d, y=%d, w=%d, h=%d\n", sr.x, sr.y, sr.w, sr.h);
			printf("COLOR: #%.8X\n", *((unsigned int *)&col));
			SDL_SetRenderDrawColor(r, col.r, col.g, col.b, col.a);
			SDL_RenderFillRect(r, &sr);
		}
		SDL_RenderPresent(r);

		printf("-------------------FRAME DONE--------------------\n");

	} while (event.type != SDL_QUIT);


	ug_ctx_free(ctx);

	SDL_DestroyRenderer(r);
	SDL_DestroyWindow(w);
	SDL_Quit();
	return 0;
}