SDL  2.0
testrelative.c File Reference
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "SDL_test_common.h"
+ Include dependency graph for testrelative.c:

Go to the source code of this file.

Functions

static void DrawRects (SDL_Renderer *renderer, SDL_Rect *rect)
 
static void loop ()
 
int main (int argc, char *argv[])
 

Variables

static SDLTest_CommonStatestate
 
int i
 
int done
 
SDL_Rect rect
 
SDL_Event event
 

Function Documentation

◆ DrawRects()

static void DrawRects ( SDL_Renderer renderer,
SDL_Rect rect 
)
static

Definition at line 31 of file testrelative.c.

References SDL_RenderFillRect, and SDL_SetRenderDrawColor.

Referenced by loop().

32 {
33  SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
34  SDL_RenderFillRect(renderer, rect);
35 }
#define SDL_RenderFillRect
#define SDL_SetRenderDrawColor

◆ loop()

static void loop ( )
static

Definition at line 38 of file testrelative.c.

References done, DrawRects(), SDL_Rect::h, i, NULL, SDLTest_CommonState::num_windows, renderer, SDLTest_CommonState::renderers, SDL_MOUSEMOTION, SDL_PollEvent, SDL_RenderClear, SDL_RenderGetViewport, SDL_RenderPresent, SDL_SetRenderDrawColor, SDLTest_CommonEvent(), SDL_Event::type, viewport, SDL_Rect::w, SDLTest_CommonState::windows, SDL_Rect::x, and SDL_Rect::y.

Referenced by main().

38  {
39  /* Check for events */
40  while (SDL_PollEvent(&event)) {
42  switch(event.type) {
43  case SDL_MOUSEMOTION:
44  {
45  rect.x += event.motion.xrel;
46  rect.y += event.motion.yrel;
47  }
48  break;
49  }
50  }
51  for (i = 0; i < state->num_windows; ++i) {
54  if (state->windows[i] == NULL)
55  continue;
56  SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0xFF);
57  SDL_RenderClear(renderer);
58 
59  /* Wrap the cursor rectangle at the screen edges to keep it visible */
60  SDL_RenderGetViewport(renderer, &viewport);
61  if (rect.x < viewport.x) rect.x += viewport.w;
62  if (rect.y < viewport.y) rect.y += viewport.h;
63  if (rect.x > viewport.x + viewport.w) rect.x -= viewport.w;
64  if (rect.y > viewport.y + viewport.h) rect.y -= viewport.h;
65 
66  DrawRects(renderer, &rect);
67 
68  SDL_RenderPresent(renderer);
69  }
70 #ifdef __EMSCRIPTEN__
71  if (done) {
72  emscripten_cancel_main_loop();
73  }
74 #endif
75 }
#define SDL_PollEvent
SDL_Rect rect
Definition: testrelative.c:27
int done
Definition: testrelative.c:26
static SDLTest_CommonState * state
Definition: testrelative.c:25
SDL_Window ** windows
void SDLTest_CommonEvent(SDLTest_CommonState *state, SDL_Event *event, int *done)
Common event handler for test windows.
static SDL_Renderer * renderer
struct _cl_event * event
#define SDL_RenderGetViewport
int x
Definition: SDL_rect.h:66
int w
Definition: SDL_rect.h:67
SDL_Renderer ** renderers
#define NULL
Definition: begin_code.h:164
#define SDL_RenderClear
int i
Definition: testrelative.c:26
int h
Definition: SDL_rect.h:67
SDL_Rect viewport
Definition: testviewport.c:28
#define SDL_SetRenderDrawColor
static void DrawRects(SDL_Renderer *renderer, SDL_Rect *rect)
Definition: testrelative.c:31
int y
Definition: SDL_rect.h:66
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:64
#define SDL_RenderPresent

◆ main()

int main ( int  argc,
char *  argv[] 
)

Definition at line 78 of file testrelative.c.

References DEFAULT_WINDOW_HEIGHT, DEFAULT_WINDOW_WIDTH, done, SDL_Rect::h, i, loop(), NULL, SDLTest_CommonState::num_windows, renderer, SDLTest_CommonState::renderers, SDL_BLENDMODE_NONE, SDL_INIT_VIDEO, SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, SDL_LogSetPriority, SDL_RenderClear, SDL_SetRelativeMouseMode, SDL_SetRenderDrawBlendMode, SDL_SetRenderDrawColor, SDL_TRUE, SDLTest_CommonArg(), SDLTest_CommonCreateState(), SDLTest_CommonInit(), SDLTest_CommonQuit(), SDL_Rect::w, SDL_Rect::x, and SDL_Rect::y.

79 {
80 
81  /* Enable standard application logging */
83 
84  /* Initialize test framework */
86  if (!state) {
87  return 1;
88  }
89  for (i = 1; i < argc; ++i) {
91  }
92  if (!SDLTest_CommonInit(state)) {
93  return 2;
94  }
95 
96  /* Create the windows and initialize the renderers */
97  for (i = 0; i < state->num_windows; ++i) {
100  SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
101  SDL_RenderClear(renderer);
102  }
103 
104  srand((unsigned int)time(NULL));
106  return 3;
107  };
108 
111  rect.w = 10;
112  rect.h = 10;
113  /* Main render loop */
114  done = 0;
115 #ifdef __EMSCRIPTEN__
116  emscripten_set_main_loop(loop, 0, 1);
117 #else
118  while (!done) {
119  loop();
120  }
121 #endif
123  return 0;
124 }
EGLSurface EGLnsecsANDROID time
Definition: eglext.h:518
SDLTest_CommonState * SDLTest_CommonCreateState(char **argv, Uint32 flags)
Parse command line parameters and create common state.
SDL_Rect rect
Definition: testrelative.c:27
int done
Definition: testrelative.c:26
int SDLTest_CommonArg(SDLTest_CommonState *state, int index)
Process one common argument.
static SDLTest_CommonState * state
Definition: testrelative.c:25
#define SDL_SetRenderDrawBlendMode
#define SDL_SetRelativeMouseMode
SDL_bool SDLTest_CommonInit(SDLTest_CommonState *state)
Open test window.
static SDL_Renderer * renderer
#define DEFAULT_WINDOW_HEIGHT
int x
Definition: SDL_rect.h:66
int w
Definition: SDL_rect.h:67
SDL_Renderer ** renderers
#define SDL_LogSetPriority
#define NULL
Definition: begin_code.h:164
static void loop()
Definition: testrelative.c:38
#define SDL_RenderClear
int i
Definition: testrelative.c:26
int h
Definition: SDL_rect.h:67
#define SDL_SetRenderDrawColor
#define DEFAULT_WINDOW_WIDTH
int y
Definition: SDL_rect.h:66
void SDLTest_CommonQuit(SDLTest_CommonState *state)
Close test window.
#define SDL_INIT_VIDEO
Definition: SDL.h:78

Variable Documentation

◆ done

int done

Definition at line 26 of file testrelative.c.

Referenced by loop(), and main().

◆ event

Definition at line 28 of file testrelative.c.

◆ i

int i

Definition at line 26 of file testrelative.c.

Referenced by loop(), and main().

◆ rect

◆ state

SDLTest_CommonState* state
static

Definition at line 25 of file testrelative.c.