/*

Copyright (C) 1997-2013 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.

*/

#include <stdlib.h>

#include <math.h>

#include <stdio.h>

#include "SDL.h"

#include "SDL_shape.h"

#define SHAPED_WINDOW_X 150

#define SHAPED_WINDOW_Y 150

#define SHAPED_WINDOW_DIMENSION 640

#define TICK_INTERVAL 1000/10

typedef struct LoadedPicture {

SDL_Surface *surface;

SDL_Texture *texture;

SDL_WindowShapeMode mode;

} LoadedPicture;

void render(SDL_Renderer *renderer,SDL_Texture *texture,SDL_Rect texture_dimensions)

{

SDL_SetRenderDrawColor(renderer,0x00,0x00,0xff,0xff);

SDL_RenderClear(renderer);

SDL_RenderCopy(renderer,texture,&texture_dimensions,&texture_dimensions);

SDL_RenderPresent(renderer);

}

static Uint32 next_time;

Uint32 time_left()

{

Uint32 now = SDL_GetTicks();

if(next_time <= now)

return 0;

else

return next_time - now;

}

int main(int argc,char** argv)

{

Uint8 num_pictures;

LoadedPicture* pictures;

int i, j;

SDL_PixelFormat* format = NULL;

SDL_Window *window;

SDL_Renderer *renderer;

SDL_Color black = {0,0,0,0xff};

SDL_Event event;

int event_pending = 0;

int should_exit = 0;

unsigned int current_picture;

int button_down;

Uint32 pixelFormat = 0;

int access = 0;

SDL_Rect texture_dimensions;;

/* Enable standard application logging */

SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);

exit(-1);

}

if(SDL_VideoInit(NULL) == -1) {

exit(-2);

}

num_pictures = argc - 1;

pictures = (LoadedPicture *)SDL_malloc(sizeof(LoadedPicture)*num_pictures);

for(i=0;i<num_pictures;i++)

pictures[i].surface = NULL;

for(i=0;i<num_pictures;i++) {

pictures[i].surface = SDL_LoadBMP(argv[i+1]);

if(pictures[i].surface == NULL) {

j = 0;

for(j=0;j<num_pictures;j++)

SDL_free(pictures);

SDL_VideoQuit();

exit(-3);

}

format = pictures[i].surface->format;

if(format->Amask != 0) {

pictures[i].mode.mode = ShapeModeBinarizeAlpha;

pictures[i].mode.parameters.binarizationCutoff = 255;

}

else {

pictures[i].mode.mode = ShapeModeColorKey;

pictures[i].mode.parameters.colorKey = black;

}

}

window = SDL_CreateShapedWindow("SDL_Shape test",SHAPED_WINDOW_X,SHAPED_WINDOW_Y,SHAPED_WINDOW_DIMENSION,SHAPED_WINDOW_DIMENSION,SDL_WINDOW_RESIZABLE);

if(window == NULL) {

for(i=0;i<num_pictures;i++)

SDL_FreeSurface(pictures[i].surface);

SDL_free(pictures);

SDL_VideoQuit();

exit(-4);

}

renderer = SDL_CreateRenderer(window,-1,0);

if (!renderer) {

SDL_DestroyWindow(window);

for(i=0;i<num_pictures;i++)

SDL_FreeSurface(pictures[i].surface);

SDL_free(pictures);

SDL_VideoQuit();

exit(-5);

}

for(i=0;i<num_pictures;i++)

pictures[i].texture = NULL;

for(i=0;i<num_pictures;i++) {

pictures[i].texture = SDL_CreateTextureFromSurface(renderer,pictures[i].surface);

if(pictures[i].texture == NULL) {

j = 0;

for(j=0;j<num_pictures;i++)

if(pictures[i].texture != NULL)

SDL_DestroyTexture(pictures[i].texture);

for(i=0;i<num_pictures;i++)

SDL_FreeSurface(pictures[i].surface);

SDL_free(pictures);

SDL_DestroyRenderer(renderer);

SDL_DestroyWindow(window);

SDL_VideoQuit();

exit(-6);

}

}

event_pending = 0;

should_exit = 0;

event_pending = SDL_PollEvent(&event);

current_picture = 0;

button_down = 0;

texture_dimensions.h = 0;

texture_dimensions.w = 0;

texture_dimensions.x = 0;

texture_dimensions.y = 0;

SDL_QueryTexture(pictures[current_picture].texture,(Uint32 *)&pixelFormat,(int *)&access,&texture_dimensions.w,&texture_dimensions.h);

SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);

SDL_SetWindowShape(window,pictures[current_picture].surface,&pictures[current_picture].mode);

next_time = SDL_GetTicks() + TICK_INTERVAL;

while(should_exit == 0) {

event_pending = SDL_PollEvent(&event);

if(event_pending == 1) {

if(event.type == SDL_KEYDOWN) {

button_down = 1;

if(event.key.keysym.sym == SDLK_ESCAPE)

should_exit = 1;

}

if(button_down && event.type == SDL_KEYUP) {

button_down = 0;

current_picture += 1;

if(current_picture >= num_pictures)

current_picture = 0;

SDL_QueryTexture(pictures[current_picture].texture,(Uint32 *)&pixelFormat,(int *)&access,&texture_dimensions.w,&texture_dimensions.h);

SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);

SDL_SetWindowShape(window,pictures[current_picture].surface,&pictures[current_picture].mode);

}

if(event.type == SDL_QUIT)

should_exit = 1;

event_pending = 0;

}

render(renderer,pictures[current_picture].texture,texture_dimensions);

SDL_Delay(time_left());

next_time += TICK_INTERVAL;

}

for(i=0;i<num_pictures;i++)

SDL_DestroyTexture(pictures[i].texture);

SDL_DestroyRenderer(renderer);

for(i=0;i<num_pictures;i++)

SDL_FreeSurface(pictures[i].surface);

SDL_free(pictures);

SDL_VideoQuit();

return 0;

}

/* vi: set ts=4 sw=4 expandtab: */