147 lines
4.5 KiB
C
147 lines
4.5 KiB
C
/*
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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#include <SDL3/SDL.h>
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#include <SDL3/SDL_main.h>
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/* !!! FIXME: rewrite this to be wired in to test framework. */
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#define RESIZE_BORDER 20
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const SDL_Rect drag_areas[] = {
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{ 20, 20, 100, 100 },
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{ 200, 70, 100, 100 },
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{ 400, 90, 100, 100 }
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};
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const SDL_FRect render_areas[] = {
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{ 20.0f, 20.0f, 100.0f, 100.0f },
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{ 200.0f, 70.0f, 100.0f, 100.0f },
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{ 400.0f, 90.0f, 100.0f, 100.0f }
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};
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static const SDL_Rect *areas = drag_areas;
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static int numareas = SDL_arraysize(drag_areas);
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static SDL_HitTestResult SDLCALL
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hitTest(SDL_Window *window, const SDL_Point *pt, void *data)
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{
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int i;
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int w, h;
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for (i = 0; i < numareas; i++) {
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if (SDL_PointInRect(pt, &areas[i])) {
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SDL_Log("HIT-TEST: DRAGGABLE\n");
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return SDL_HITTEST_DRAGGABLE;
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}
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}
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SDL_GetWindowSize(window, &w, &h);
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#define REPORT_RESIZE_HIT(name) \
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{ \
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SDL_Log("HIT-TEST: RESIZE_" #name "\n"); \
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return SDL_HITTEST_RESIZE_##name; \
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}
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if (pt->x < RESIZE_BORDER && pt->y < RESIZE_BORDER) {
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REPORT_RESIZE_HIT(TOPLEFT);
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} else if (pt->x > RESIZE_BORDER && pt->x < w - RESIZE_BORDER && pt->y < RESIZE_BORDER) {
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REPORT_RESIZE_HIT(TOP);
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} else if (pt->x > w - RESIZE_BORDER && pt->y < RESIZE_BORDER) {
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REPORT_RESIZE_HIT(TOPRIGHT);
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} else if (pt->x > w - RESIZE_BORDER && pt->y > RESIZE_BORDER && pt->y < h - RESIZE_BORDER) {
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REPORT_RESIZE_HIT(RIGHT);
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} else if (pt->x > w - RESIZE_BORDER && pt->y > h - RESIZE_BORDER) {
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REPORT_RESIZE_HIT(BOTTOMRIGHT);
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} else if (pt->x < w - RESIZE_BORDER && pt->x > RESIZE_BORDER && pt->y > h - RESIZE_BORDER) {
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REPORT_RESIZE_HIT(BOTTOM);
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} else if (pt->x < RESIZE_BORDER && pt->y > h - RESIZE_BORDER) {
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REPORT_RESIZE_HIT(BOTTOMLEFT);
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} else if (pt->x < RESIZE_BORDER && pt->y < h - RESIZE_BORDER && pt->y > RESIZE_BORDER) {
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REPORT_RESIZE_HIT(LEFT);
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}
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SDL_Log("HIT-TEST: NORMAL\n");
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return SDL_HITTEST_NORMAL;
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}
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int main(int argc, char **argv)
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{
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int done = 0;
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SDL_Window *window;
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SDL_Renderer *renderer;
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/* !!! FIXME: check for errors. */
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SDL_Init(SDL_INIT_VIDEO);
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window = SDL_CreateWindow("Drag the red boxes", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_BORDERLESS | SDL_WINDOW_RESIZABLE);
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renderer = SDL_CreateRenderer(window, NULL, 0);
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if (SDL_SetWindowHitTest(window, hitTest, NULL) == -1) {
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SDL_Log("Enabling hit-testing failed!\n");
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SDL_Quit();
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return 1;
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}
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while (!done) {
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SDL_Event e;
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int nothing_to_do = 1;
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SDL_SetRenderDrawColor(renderer, 0, 0, 127, 255);
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SDL_RenderClear(renderer);
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SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
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SDL_RenderFillRects(renderer, render_areas, SDL_arraysize(render_areas));
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SDL_RenderPresent(renderer);
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while (SDL_PollEvent(&e)) {
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nothing_to_do = 0;
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switch (e.type) {
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case SDL_EVENT_MOUSE_BUTTONDOWN:
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SDL_Log("button down!\n");
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break;
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case SDL_EVENT_MOUSE_BUTTONUP:
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SDL_Log("button up!\n");
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break;
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case SDL_EVENT_WINDOW_MOVED:
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SDL_Log("Window event moved to (%d, %d)!\n", (int)e.window.data1, (int)e.window.data2);
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break;
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case SDL_EVENT_KEY_DOWN:
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if (e.key.keysym.sym == SDLK_ESCAPE) {
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done = 1;
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} else if (e.key.keysym.sym == SDLK_x) {
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if (areas == NULL) {
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areas = drag_areas;
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numareas = SDL_arraysize(drag_areas);
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} else {
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areas = NULL;
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numareas = 0;
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}
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}
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break;
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case SDL_EVENT_QUIT:
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done = 1;
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break;
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}
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}
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if (nothing_to_do) {
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SDL_Delay(50);
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}
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}
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SDL_Quit();
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return 0;
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}
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