This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
testnative.c
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
/*
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
/* Simple program: Create a native window and attach an SDL renderer */
#include <stdio.h>
#include "testnative.h"
#define WINDOW_W 640
#define WINDOW_H 480
#define NUM_SPRITES 100
#define MAX_SPEED 1
static NativeWindowFactory *factories[] = {
#ifdef TEST_NATIVE_WINDOWS
&WindowsWindowFactory,
#endif
#ifdef TEST_NATIVE_X11
&X11WindowFactory,
#endif
#ifdef TEST_NATIVE_COCOA
&CocoaWindowFactory,
#endif
NULL
};
static NativeWindowFactory *factory = NULL;
static void *native_window;
static SDL_Rect *positions, *velocities;
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
static void
quit(int rc)
{
SDL_VideoQuit();
if (native_window) {
factory->DestroyNativeWindow(native_window);
}
exit(rc);
}
SDL_Texture *
LoadSprite(SDL_Renderer *renderer, char *file)
{
SDL_Surface *temp;
SDL_Texture *sprite;
/* Load the sprite image */
temp = SDL_LoadBMP(file);
if (temp == NULL) {
fprintf(stderr, "Couldn't load %s: %s", file, SDL_GetError());
return 0;
}
/* Set transparent pixel as the pixel at (0,0) */
if (temp->format->palette) {
SDL_SetColorKey(temp, 1, *(Uint8 *) temp->pixels);
}
/* Create textures from the image */
sprite = SDL_CreateTextureFromSurface(renderer, temp);
if (!sprite) {
fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
SDL_FreeSurface(temp);
return 0;
}
SDL_FreeSurface(temp);
/* We're ready to roll. :) */
return sprite;
}
void
MoveSprites(SDL_Renderer * renderer, SDL_Texture * sprite)
{
int sprite_w, sprite_h;
int i;
SDL_Rect viewport;
SDL_Rect *position, *velocity;
/* Query the sizes */
SDL_RenderGetViewport(renderer, &viewport);
SDL_QueryTexture(sprite, NULL, NULL, &sprite_w, &sprite_h);
/* Draw a gray background */
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
/* Move the sprite, bounce at the wall, and draw */
for (i = 0; i < NUM_SPRITES; ++i) {
position = &positions[i];
velocity = &velocities[i];
position->x += velocity->x;
if ((position->x < 0) || (position->x >= (viewport.w - sprite_w))) {
velocity->x = -velocity->x;
position->x += velocity->x;
}
position->y += velocity->y;
if ((position->y < 0) || (position->y >= (viewport.h - sprite_h))) {
velocity->y = -velocity->y;
position->y += velocity->y;
}
/* Blit the sprite onto the screen */
SDL_RenderCopy(renderer, sprite, NULL, position);
}
/* Update the screen! */
SDL_RenderPresent(renderer);
}
int
main(int argc, char *argv[])
{
int i, done;
const char *driver;
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Texture *sprite;
int window_w, window_h;
int sprite_w, sprite_h;
SDL_Event event;
if (SDL_VideoInit(NULL) < 0) {
fprintf(stderr, "Couldn't initialize SDL video: %s\n",
SDL_GetError());
exit(1);
}
driver = SDL_GetCurrentVideoDriver();
/* Find a native window driver and create a native window */
for (i = 0; factories[i]; ++i) {
if (SDL_strcmp(driver, factories[i]->tag) == 0) {
factory = factories[i];
break;
}
}
if (!factory) {
fprintf(stderr, "Couldn't find native window code for %s driver\n",
driver);
quit(2);
}
printf("Creating native window for %s driver\n", driver);
native_window = factory->CreateNativeWindow(WINDOW_W, WINDOW_H);
if (!native_window) {
fprintf(stderr, "Couldn't create native window\n");
quit(3);
}
window = SDL_CreateWindowFrom(native_window);
if (!window) {
fprintf(stderr, "Couldn't create SDL window: %s\n", SDL_GetError());
quit(4);
}
SDL_SetWindowTitle(window, "SDL Native Window Test");
/* Create the renderer */
renderer = SDL_CreateRenderer(window, -1, 0);
if (!renderer) {
fprintf(stderr, "Couldn't create renderer: %s\n", SDL_GetError());
quit(5);
}
/* Clear the window, load the sprite and go! */
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
sprite = LoadSprite(renderer, "icon.bmp");
if (!sprite) {
quit(6);
}
/* Allocate memory for the sprite info */
SDL_GetWindowSize(window, &window_w, &window_h);
SDL_QueryTexture(sprite, NULL, NULL, &sprite_w, &sprite_h);
positions = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
velocities = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
if (!positions || !velocities) {
fprintf(stderr, "Out of memory!\n");
quit(2);
}
srand(time(NULL));
for (i = 0; i < NUM_SPRITES; ++i) {
positions[i].x = rand() % (window_w - sprite_w);
positions[i].y = rand() % (window_h - sprite_h);
positions[i].w = sprite_w;
positions[i].h = sprite_h;
velocities[i].x = 0;
velocities[i].y = 0;
while (!velocities[i].x && !velocities[i].y) {
velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
}
}
/* Main render loop */
done = 0;
while (!done) {
/* Check for events */
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_WINDOWEVENT:
switch (event.window.event) {
case SDL_WINDOWEVENT_EXPOSED:
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
break;
}
break;
case SDL_QUIT:
done = 1;
break;
default:
break;
}
}
MoveSprites(renderer, sprite);
}
quit(0);
}
/* vi: set ts=4 sw=4 expandtab: */