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
hitTest(SDL_Window * window,const SDL_Point * pt,void * data)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 
main(int argc,char ** argv)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 }
135