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#include <OpenGL/gl.h>
#include "PictureGLView.h"
@implementation HBPictureGLView
- (void) SetManager: (HBManager*) manager
{
fManager = manager;
}
- (void) SetTitle: (HBTitle*) title
{
fTitle = title;
/* This is needed as the view's size may have changed */
[self clearGLContext];
[self openGLContext];
}
- (void) ShowPicture: (int) index
{
/* Get the picture */
uint8_t * tmp = fManager->GetPreview( fTitle, index );
/* Make it be upside-down */
if( fPicture ) free( fPicture );
fPicture = (uint8_t*) malloc( 4 * ( fTitle->fOutWidthMax + 2 ) *
( fTitle->fOutHeightMax + 2 ) );
for( uint32_t i = 0; i < fTitle->fOutHeightMax + 2; i++ )
{
memcpy( fPicture + 4 * ( fTitle->fOutWidthMax + 2 ) * i,
tmp + 4 * ( fTitle->fOutWidthMax + 2 ) *
( fTitle->fOutHeightMax + 1 - i ),
4 * ( fTitle->fOutWidthMax + 2 ) );
}
free( tmp );
/* Grrr - should find a way to give ARGB to OpenGL */
uint8_t r, g, b, a;
for( uint32_t i = 0; i < fTitle->fOutHeightMax + 2; i++ )
{
for( uint32_t j = 0; j < fTitle->fOutWidthMax + 2; j++ )
{
a = fPicture[4*(i*(fTitle->fOutWidthMax+2)+j)];
r = fPicture[4*(i*(fTitle->fOutWidthMax+2)+j)+1];
g = fPicture[4*(i*(fTitle->fOutWidthMax+2)+j)+2];
b = fPicture[4*(i*(fTitle->fOutWidthMax+2)+j)+3];
fPicture[4*(i*(fTitle->fOutWidthMax+2)+j)] = r;
fPicture[4*(i*(fTitle->fOutWidthMax+2)+j)+1] = g;
fPicture[4*(i*(fTitle->fOutWidthMax+2)+j)+2] = b;
fPicture[4*(i*(fTitle->fOutWidthMax+2)+j)+3] = a;
}
}
[self setNeedsDisplay: YES];
}
/* Override NSView's initWithFrame: to specify our pixel format */
- (id) initWithFrame: (NSRect) frame
{
fManager = NULL;
fTitle = NULL;
fPicture = NULL;
GLuint attribs[] =
{
NSOpenGLPFANoRecovery,
NSOpenGLPFAWindow,
NSOpenGLPFAAccelerated,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAColorSize, 24,
NSOpenGLPFAAlphaSize, 8,
NSOpenGLPFADepthSize, 24,
NSOpenGLPFAStencilSize, 8,
NSOpenGLPFAAccumSize, 0,
0
};
NSOpenGLPixelFormat * fmt = [[NSOpenGLPixelFormat alloc]
initWithAttributes: (NSOpenGLPixelFormatAttribute*) attribs];
if( !fmt )
{
fprintf( stderr, "Sarass\n" );
}
return self = [super initWithFrame:frame pixelFormat:
[fmt autorelease]];
}
/* Override the view's drawRect: to draw our GL content */
- (void) drawRect: (NSRect) rect
{
glViewport( 0, 0, (GLsizei) rect.size.width,
(GLsizei) rect.size.height );
/* Black background */
glClearColor( 0, 0, 0, 0 );
glClear( GL_COLOR_BUFFER_BIT );
/* Show it */
if( fPicture )
{
glDrawPixels( fTitle->fOutWidthMax + 2,
fTitle->fOutHeightMax + 2, GL_RGBA,
GL_UNSIGNED_BYTE, fPicture );
}
[[self openGLContext] flushBuffer];
}
@end
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