sdl

FORK: Simple Directmedia Layer
git clone https://git.neptards.moe/neptards/sdl.git
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testhittesting.c (4082B)

      1 #include <stdio.h>
      2 #include "SDL.h"
      3 
      4 /* !!! FIXME: rewrite this to be wired in to test framework. */
      5 
      6 #define RESIZE_BORDER 20
      7 
      8 const SDL_Rect drag_areas[] = {
      9     { 20, 20, 100, 100 },
     10     { 200, 70, 100, 100 },
     11     { 400, 90, 100, 100 }
     12 };
     13 
     14 static const SDL_Rect *areas = drag_areas;
     15 static int numareas = SDL_arraysize(drag_areas);
     16 
     17 static SDL_HitTestResult SDLCALL
     18 hitTest(SDL_Window *window, const SDL_Point *pt, void *data)
     19 {
     20     int i;
     21     int w, h;
     22 
     23     for (i = 0; i < numareas; i++) {
     24         if (SDL_PointInRect(pt, &areas[i])) {
     25             SDL_Log("HIT-TEST: DRAGGABLE\n");
     26             return SDL_HITTEST_DRAGGABLE;
     27         }
     28     }
     29 
     30     SDL_GetWindowSize(window, &w, &h);
     31 
     32     #define REPORT_RESIZE_HIT(name) { \
     33         SDL_Log("HIT-TEST: RESIZE_" #name "\n"); \
     34         return SDL_HITTEST_RESIZE_##name; \
     35     }
     36 
     37     if (pt->x < RESIZE_BORDER && pt->y < RESIZE_BORDER) {
     38         REPORT_RESIZE_HIT(TOPLEFT);
     39     } else if (pt->x > RESIZE_BORDER && pt->x < w - RESIZE_BORDER && pt->y < RESIZE_BORDER) {
     40         REPORT_RESIZE_HIT(TOP);
     41     } else if (pt->x > w - RESIZE_BORDER && pt->y < RESIZE_BORDER) {
     42         REPORT_RESIZE_HIT(TOPRIGHT);
     43     } else if (pt->x > w - RESIZE_BORDER && pt->y > RESIZE_BORDER && pt->y < h - RESIZE_BORDER) {
     44         REPORT_RESIZE_HIT(RIGHT);
     45     } else if (pt->x > w - RESIZE_BORDER && pt->y > h - RESIZE_BORDER) {
     46         REPORT_RESIZE_HIT(BOTTOMRIGHT);
     47     } else if (pt->x < w - RESIZE_BORDER && pt->x > RESIZE_BORDER && pt->y > h - RESIZE_BORDER) {
     48         REPORT_RESIZE_HIT(BOTTOM);
     49     } else if (pt->x < RESIZE_BORDER && pt->y > h - RESIZE_BORDER) {
     50         REPORT_RESIZE_HIT(BOTTOMLEFT);
     51     } else if (pt->x < RESIZE_BORDER && pt->y < h - RESIZE_BORDER && pt->y > RESIZE_BORDER) {
     52         REPORT_RESIZE_HIT(LEFT);
     53     }
     54 
     55     SDL_Log("HIT-TEST: NORMAL\n");
     56     return SDL_HITTEST_NORMAL;
     57 }
     58 
     59 
     60 int main(int argc, char **argv)
     61 {
     62     int done = 0;
     63     SDL_Window *window;
     64     SDL_Renderer *renderer;
     65 
     66     /* !!! FIXME: check for errors. */
     67     SDL_Init(SDL_INIT_VIDEO);
     68     window = SDL_CreateWindow("Drag the red boxes", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_BORDERLESS | SDL_WINDOW_RESIZABLE);
     69     renderer = SDL_CreateRenderer(window, -1, 0);
     70 
     71     if (SDL_SetWindowHitTest(window, hitTest, NULL) == -1) {
     72         SDL_Log("Enabling hit-testing failed!\n");
     73         SDL_Quit();
     74         return 1;
     75     }
     76 
     77     while (!done)
     78     {
     79         SDL_Event e;
     80         int nothing_to_do = 1;
     81 
     82         SDL_SetRenderDrawColor(renderer, 0, 0, 127, 255);
     83         SDL_RenderClear(renderer);
     84         SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
     85         SDL_RenderFillRects(renderer, areas, SDL_arraysize(drag_areas));
     86         SDL_RenderPresent(renderer);
     87 
     88         while (SDL_PollEvent(&e)) {
     89             nothing_to_do = 0;
     90 
     91             switch (e.type)
     92             {
     93                 case SDL_MOUSEBUTTONDOWN:
     94                     SDL_Log("button down!\n");
     95                     break;
     96 
     97                 case SDL_MOUSEBUTTONUP:
     98                     SDL_Log("button up!\n");
     99                     break;
    100 
    101                 case SDL_WINDOWEVENT:
    102                     if (e.window.event == SDL_WINDOWEVENT_MOVED) {
    103                         SDL_Log("Window event moved to (%d, %d)!\n", (int) e.window.data1, (int) e.window.data2);
    104                     }
    105                     break;
    106 
    107                 case SDL_KEYDOWN:
    108                     if (e.key.keysym.sym == SDLK_ESCAPE) {
    109                         done = 1;
    110                     } else if (e.key.keysym.sym == SDLK_x) {
    111                         if (!areas) {
    112                             areas = drag_areas;
    113                             numareas = SDL_arraysize(drag_areas);
    114                         } else {
    115                             areas = NULL;
    116                             numareas = 0;
    117                         }
    118                     }
    119                     break;
    120 
    121                 case SDL_QUIT:
    122                     done = 1;
    123                     break;
    124             }
    125         }
    126 
    127         if (nothing_to_do) {
    128             SDL_Delay(50);
    129         }
    130     }
    131 
    132     SDL_Quit();
    133     return 0;
    134 }