Hash :
b8d85c69
Author :
Date :
2022-11-30T12:51:59
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132
#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 == NULL) {
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;
}