#include <stdio.h> #include "SDL.h" /* !!! FIXME: rewrite this to be wired in to test framework. */ #define RESIZE_BORDER 20 const SDL_Rect drag_areas[] = { { 20, 20, 100, 100 }, { 200, 70, 100, 100 }, { 400, 90, 100, 100 } }; static const SDL_Rect *areas = drag_areas; static int numareas = SDL_arraysize(drag_areas); static SDL_HitTestResult SDLCALL hitTest(SDL_Window *window, const SDL_Point *pt, void *data) { int i; int w, h; for (i = 0; i < numareas; i++) { if (SDL_PointInRect(pt, &areas[i])) { SDL_Log("HIT-TEST: DRAGGABLE\n"); return SDL_HITTEST_DRAGGABLE; } } SDL_GetWindowSize(window, &w, &h); #define REPORT_RESIZE_HIT(name) \ { \ SDL_Log("HIT-TEST: RESIZE_" #name "\n"); \ return SDL_HITTEST_RESIZE_##name; \ } if (pt->x < RESIZE_BORDER && pt->y < RESIZE_BORDER) { REPORT_RESIZE_HIT(TOPLEFT); } else if (pt->x > RESIZE_BORDER && pt->x < w - RESIZE_BORDER && pt->y < RESIZE_BORDER) { REPORT_RESIZE_HIT(TOP); } else if (pt->x > w - RESIZE_BORDER && pt->y < RESIZE_BORDER) { REPORT_RESIZE_HIT(TOPRIGHT); } else if (pt->x > w - RESIZE_BORDER && pt->y > RESIZE_BORDER && pt->y < h - RESIZE_BORDER) { REPORT_RESIZE_HIT(RIGHT); } else if (pt->x > w - RESIZE_BORDER && pt->y > h - RESIZE_BORDER) { REPORT_RESIZE_HIT(BOTTOMRIGHT); } else if (pt->x < w - RESIZE_BORDER && pt->x > RESIZE_BORDER && pt->y > h - RESIZE_BORDER) { REPORT_RESIZE_HIT(BOTTOM); } else if (pt->x < RESIZE_BORDER && pt->y > h - RESIZE_BORDER) { REPORT_RESIZE_HIT(BOTTOMLEFT); } else if (pt->x < RESIZE_BORDER && pt->y < h - RESIZE_BORDER && pt->y > RESIZE_BORDER) { REPORT_RESIZE_HIT(LEFT); } SDL_Log("HIT-TEST: NORMAL\n"); return SDL_HITTEST_NORMAL; } int main(int argc, char **argv) { int done = 0; SDL_Window *window; SDL_Renderer *renderer; /* !!! FIXME: check for errors. */ SDL_Init(SDL_INIT_VIDEO); window = SDL_CreateWindow("Drag the red boxes", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_BORDERLESS | SDL_WINDOW_RESIZABLE); renderer = SDL_CreateRenderer(window, -1, 0); if (SDL_SetWindowHitTest(window, hitTest, NULL) == -1) { SDL_Log("Enabling hit-testing failed!\n"); SDL_Quit(); return 1; } while (!done) { SDL_Event e; int nothing_to_do = 1; SDL_SetRenderDrawColor(renderer, 0, 0, 127, 255); SDL_RenderClear(renderer); SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255); SDL_RenderFillRects(renderer, areas, SDL_arraysize(drag_areas)); SDL_RenderPresent(renderer); while (SDL_PollEvent(&e)) { nothing_to_do = 0; switch (e.type) { case SDL_MOUSEBUTTONDOWN: SDL_Log("button down!\n"); break; case SDL_MOUSEBUTTONUP: SDL_Log("button up!\n"); break; case SDL_WINDOWEVENT: if (e.window.event == SDL_WINDOWEVENT_MOVED) { SDL_Log("Window event moved to (%d, %d)!\n", (int)e.window.data1, (int)e.window.data2); } break; case SDL_KEYDOWN: if (e.key.keysym.sym == SDLK_ESCAPE) { done = 1; } else if (e.key.keysym.sym == SDLK_x) { if (!areas) { areas = drag_areas; numareas = SDL_arraysize(drag_areas); } else { areas = NULL; numareas = 0; } } break; case SDL_QUIT: done = 1; break; } } if (nothing_to_do) { SDL_Delay(50); } } SDL_Quit(); return 0; }