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Canvas.cpp
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Canvas.cpp
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/*
* This file is part of NumptyPhysics
* Copyright (C) 2008 Tim Edmonds
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include <string>
#include "Common.h"
#include "Config.h"
#include "Canvas.h"
#include "Path.h"
#include <SDL/SDL.h>
#include <SDL/SDL_image.h>
#define Window X11Window //oops
#define Font X11Font //oops
#include "Swipe.h"
#include <SDL/SDL_syswm.h>
#ifndef WIN32
#include <X11/X.h>
#include <X11/Xlib.h>
#endif
#undef Window
//#define FORCE_16BPP
// zoomer.cpp
extern SDL_Surface *zoomSurface(SDL_Surface * src, double zoomx, double zoomy);
// extract RGB colour components as 8bit values from RGB888
#define R32(p) (((p)>>16)&0xff)
#define G32(p) (((p)>>8)&0xff)
#define B32(p) ((p)&0xff)
// extract RGB colour components as 8bit values from RGB565
#define R16(p) (((p)>>8)&0xf8)
#define G16(p) (((p)>>3)&0xfc)
#define B16(p) (((p)<<3)&0xf8)
#define R16G16B16_TO_RGB888(r,g,b) \
((((r)<<8)&0xff0000) | ((g)&0x00ff00) | (((b)>>8)))
#define R16G16B16_TO_RGB565(r,g,b) \
((Uint16)( (((r)&0xf800) | (((g)>>5)&0x07e0) | (((b)>>11))&0x001f) ))
#define RGB888_TO_RGB565(p) \
((Uint16)( (((p)>>8)&0xf800) | (((p)>>5)&0x07e0) | (((p)>>3)&0x001f) ))
void ExtractRgb( uint32 c, int& r, int &g, int &b )
{
r = R32(c); g = G32(c); b = B32(c);
}
void ExtractRgb( uint16 c, int& r, int &g, int &b )
{
r = R16(c); g = G16(c); b = B16(c);
}
template <typename PIX>
inline void AlphaBlend( PIX& p, int cr, int cg, int cb, int a, int ia )
{
throw "not implemented";
}
inline void AlphaBlend( Uint16& p, int cr, int cg, int cb, int a, int ia )
{ //565
p = R16G16B16_TO_RGB565( a * cr + ia * R16(p),
a * cg + ia * G16(p),
a * cb + ia * B16(p) );
}
inline void AlphaBlend( Uint32& p, int cr, int cg, int cb, int a, int ia )
{ //888
p = R16G16B16_TO_RGB888( a * cr + ia * R32(p),
a * cg + ia * G32(p),
a * cb + ia * B32(p) );
}
#define ALPHA_MAX 0xff
template <typename PIX, unsigned W>
struct AlphaBrush
{
int m_r, m_g, m_b, m_c;
inline AlphaBrush( PIX c )
{
m_c = c;
ExtractRgb( c, m_r, m_g, m_b );
}
inline void ink( PIX* pix, int step, int a )
{
int ia = ALPHA_MAX - a;
int o=-W/2;
AlphaBlend( *(pix+o*step), m_r, m_g, m_b, a, ia );
o++;
for ( ; o<=W/2; o++ ) {
*(pix+o*step) = m_c;
}
AlphaBlend( *(pix+o*step), m_r, m_g, m_b, ia, a );
}
};
template <typename PIX>
struct AlphaBrush<PIX,1>
{
int m_r, m_g, m_b, m_c;
inline AlphaBrush( PIX c )
{
m_c = c;
ExtractRgb( c, m_r, m_g, m_b );
}
inline void ink( PIX* pix, int step, int a )
{
int ia = ALPHA_MAX - a;
AlphaBlend( *(pix-step), m_r, m_g, m_b, a, ia );
AlphaBlend( *(pix), m_r, m_g, m_b, ia, a );
}
};
template <typename PIX>
struct AlphaBrush<PIX,3>
{
int m_r, m_g, m_b, m_c;
inline AlphaBrush( PIX c )
{
m_c = c;
ExtractRgb( c, m_r, m_g, m_b );
}
inline void ink( PIX* pix, int step, int a )
{
int ia = ALPHA_MAX - a;
AlphaBlend( *(pix-step), m_r, m_g, m_b, a, ia );
*(pix) = m_c;
AlphaBlend( *(pix+step), m_r, m_g, m_b, ia, a );
}
};
template <typename PIX, unsigned THICK>
inline void renderLine( void *buf,
int byteStride,
int x1, int y1, int x2, int y2,
PIX color )
{
PIX *pix = (PIX*)((char*)buf+byteStride*y1) + x1;
int lg_delta, sh_delta, cycle, lg_step, sh_step;
int alpha, alpha_step, alpha_reset;
int pixStride = byteStride/sizeof(PIX);
AlphaBrush<PIX,THICK> brush( color );
lg_delta = x2 - x1;
sh_delta = y2 - y1;
lg_step = Sgn(lg_delta);
lg_delta = Abs(lg_delta);
sh_step = Sgn(sh_delta);
sh_delta = Abs(sh_delta);
if ( sh_step < 0 ) pixStride = -pixStride;
// in theory should be able to do this with just a single step
// variable - ie: combine cycle and alpha as in wu algorithm
if (sh_delta < lg_delta) {
cycle = lg_delta >> 1;
alpha = ALPHA_MAX >> 1;
alpha_step = -(ALPHA_MAX * sh_delta/(lg_delta+1));
alpha_reset = alpha_step < 0 ? ALPHA_MAX : 0;
int count = lg_step>0 ? x2-x1 : x1-x2;
while ( count-- ) {
brush.ink( pix, pixStride, alpha );
cycle += sh_delta;
alpha += alpha_step;
pix += lg_step;
if (cycle > lg_delta) {
cycle -= lg_delta;
alpha = alpha_reset;
pix += pixStride;
}
}
} else {
cycle = sh_delta >> 1;
alpha = ALPHA_MAX >> 1;
alpha_step = -lg_step * Abs(ALPHA_MAX * lg_delta/(sh_delta+1));
alpha_reset = alpha_step < 0 ? ALPHA_MAX : 0;
int count = sh_step>0 ? y2-y1 : y1-y2;
while ( count-- ) {
brush.ink( pix, 1, alpha );
cycle += lg_delta;
alpha += alpha_step;
pix += pixStride;
if (cycle > sh_delta) {
cycle -= sh_delta;
alpha = alpha_reset;
pix += lg_step;
}
}
}
}
#define SURFACE(cANVASpTR) ((SDL_Surface*)((cANVASpTR)->m_state))
Canvas::Canvas( int w, int h )
: m_state(NULL),
m_bgColour(0),
m_bgImage(NULL)
{
switch (SDL_GetVideoInfo()->vfmt->BitsPerPixel) {
case 16:
case 32:
#ifdef FORCE_16BPP
m_state = SDL_CreateRGBSurface( SDL_SWSURFACE, w, h, 16,
0xF100, 0x07e0, 0x001F, 0x0 );
#else
m_state = SDL_CreateRGBSurface( SDL_SWSURFACE, w, h,
SDL_GetVideoInfo()->vfmt->BitsPerPixel,
SDL_GetVideoInfo()->vfmt->Rmask,
SDL_GetVideoInfo()->vfmt->Gmask,
SDL_GetVideoInfo()->vfmt->Bmask,
SDL_GetVideoInfo()->vfmt->Amask );
#endif
break;
default:
// eg: dummy vid driver reports 8bpp
m_state = SDL_CreateRGBSurface( SDL_SWSURFACE, w, h, 32,
0xFF0000, 0x00FF00, 0x0000FF, 0xFF000000 );
break;
}
resetClip();
}
Canvas::Canvas( State state )
: m_state(state),
m_bgColour(0),
m_bgImage(NULL)
{
resetClip();
}
Canvas::~Canvas()
{
if (SURFACE(this)) {
SDL_FreeSurface(SURFACE(this));
}
}
int Canvas::width() const
{
return SURFACE(this)->w;
}
int Canvas::height() const
{
return SURFACE(this)->h;
}
int Canvas::makeColour( int r, int g, int b ) const
{
return SDL_MapRGB( SURFACE(this)->format, r, g, b );
}
int Canvas::makeColour( int c ) const
{
return SDL_MapRGB( SURFACE(this)->format,
(c>>16)&0xff, (c>>8)&0xff, (c>>0)&0xff );
}
void Canvas::resetClip()
{
if ( m_state ) {
setClip( 0, 0, width(), height() );
} else {
setClip( 0, 0, 0, 0 );
}
}
void Canvas::setClip( int x, int y, int w, int h )
{
//fprintf(stderr,"setclip %d,%d+%d+%d\n",x,y,w,h);
m_clip = Rect(x,y,x+w-1,y+h-1);
}
void Canvas::setBackground( int c )
{
m_bgColour = c;
}
void Canvas::setBackground( Canvas* bg )
{
m_bgImage = bg;
}
void Canvas::clear()
{
if ( m_bgImage ) {
SDL_BlitSurface( SURFACE(m_bgImage), NULL, SURFACE(this), NULL );
} else {
SDL_FillRect( SURFACE(this), NULL, m_bgColour );
}
}
void Canvas::fade( const Rect& rr )
{
Uint32 bpp;
Rect r = rr;
r.clipTo( m_clip );
bpp = SURFACE(this)->format->BytesPerPixel;
char* row = (char*)SURFACE(this)->pixels;
int pixStride = width();
int w = r.br.x - r.tl.x;
int h = r.br.y - r.tl.y;
row += (r.tl.x + r.tl.y * pixStride) * bpp;
SDL_LockSurface(SURFACE(this));
switch ( bpp ) {
case 2:
for ( int r=h; r>0; r-- ) {
for ( int i=0;i<w;i++) {
((Uint16*)row)[i] = (((Uint16*)row)[i]>>1) & 0x7bef;
}
row += pixStride * bpp;
}
break;
case 4:
for ( int r=h; r>0; r-- ) {
for ( int i=0;i<w;i++) {
((Uint32*)row)[i] = (((Uint32*)row)[i]>>1) & 0x7f7f7f;
}
row += pixStride * bpp;
}
break;
}
SDL_UnlockSurface(SURFACE(this));
}
#if 0
inline uint32 avg2Pixels565(uint32 a, uint32 b)
{
return (((a^b)&0xf7def7de)>>1) + (a&b);
}
inline uint16 avgPixels565(uint32 ab)
{
uint16 a = ab >> 16;
uint16 v = ab & 0xffff;
return (((a^b)&0xf7def7de)>>1) + (a&b);
}
#endif
Canvas* Canvas::scale( int factor ) const
{
Canvas *c = new Canvas( width()/factor, height()/factor );
if ( c ) {
if ( factor==4 && SURFACE(this)->format->BytesPerPixel==2 ) {
const uint16 MASK2LSB = 0xe79c;
int dpitch = SURFACE(c)->pitch / sizeof(uint16_t);
int spitch = SURFACE(this)->pitch / sizeof(uint16_t);
uint16_t *drow = (uint16_t*)SURFACE(c)->pixels;
for ( int y=0;y<c->height();y++ ) {
for ( int x=0;x<c->width();x++ ) {
uint16 p = 0;
uint16_t *srow = (uint16_t*)SURFACE(this)->pixels
+ (y*spitch+x)*factor;
for ( int yy=0;yy<4;yy++ ) {
uint16 q = 0;
for ( int xx=0;xx<4;xx++ ) {
q += (srow[xx]&MASK2LSB)>>2;
}
p += (q&MASK2LSB)>>2;
srow += spitch;
}
drow[x] = p;
}
drow += dpitch;
}
} else if (SURFACE(this)->format->BytesPerPixel==2 ) {
int dpitch = SURFACE(c)->pitch / sizeof(uint16_t);
int spitch = SURFACE(this)->pitch / sizeof(uint16_t);
uint16_t *drow = (uint16_t*)SURFACE(c)->pixels;
for ( int y=0;y<c->height();y++ ) {
for ( int x=0;x<c->width();x++ ) {
uint16_t *srow = (uint16_t*)SURFACE(this)->pixels
+ (y*spitch+x)*factor;
uint32_t r=0,g=0,b=0;
for ( int yy=0;yy<factor;yy++ ) {
for ( int xx=0;xx<factor;xx++ ) {
r += srow[xx] & 0xF800;
g += srow[xx] & 0x07e0;
b += srow[xx] & 0x001F;
}
srow += spitch;
}
r /= factor*factor;
g /= factor*factor;
b /= factor*factor;
drow[x] = (r&0xF800)|(g&0x07e0)|(b&0x001F);
}
drow += dpitch;
}
} else {
for ( int y=0;y<c->height();y++ ) {
for ( int x=0;x<c->width();x++ ) {
int r=0,g=0,b=0;
Uint8 rr,gg,bb;
for ( int yy=0;yy<factor;yy++ ) {
for ( int xx=0;xx<factor;xx++ ) {
SDL_GetRGB( readPixel( x*factor+xx, y*factor+yy ),
SURFACE(this)->format, &rr,&gg,&bb );
r += rr;
g += gg;
b += bb;
}
}
int div = factor*factor;
c->drawPixel( x, y, makeColour(r/div,g/div,b/div) );
}
}
}
}
return c;
}
void Canvas::scale( int w, int h )
{
if ( w!=width() && h!=height() ) {
SDL_Surface *s = zoomSurface( SURFACE(this),
(double)w/(double)width(),
(double)h/(double)height() );
if ( s ) {
SDL_FreeSurface( SURFACE(this) );
m_state = s;
}
}
}
void Canvas::clear( const Rect& r )
{
if ( m_bgImage ) {
SDL_Rect srcRect = { r.tl.x, r.tl.y, r.br.x-r.tl.x+1, r.br.y-r.tl.y+1 };
SDL_BlitSurface( SURFACE(m_bgImage), &srcRect, SURFACE(this), &srcRect );
} else {
drawRect( r, m_bgColour );
}
}
void Canvas::drawImage( Canvas *canvas, int x, int y )
{
Rect dest(x,y,x+canvas->width(),y+canvas->height());
dest.clipTo(m_clip);
// if (dest.tl.y != y) {
// fprintf(stderr,"clipped (%d,%d-%d,%d) to (%d,%d)-(%d,%d)\n",
// x,y,x+canvas->width(),y+canvas->height(),
// dest.tl.x, dest.tl.y, dest.br.x, dest.br.y);
// }
SDL_Rect sdlsrc = { dest.tl.x-x, dest.tl.y-y, dest.width(), dest.height() };
SDL_Rect sdldst = { dest.tl.x, dest.tl.y, 0, 0 };
SDL_BlitSurface( SURFACE(canvas), &sdlsrc, SURFACE(this), &sdldst );
}
void Canvas::drawPixel( int x, int y, int c )
{
Uint32 bpp, ofs;
bpp = SURFACE(this)->format->BytesPerPixel;
ofs = SURFACE(this)->pitch*y;
char* row = (char*)SURFACE(this)->pixels + ofs;
SDL_LockSurface(SURFACE(this));
switch ( bpp ) {
case 2: ((Uint16*)row)[x] = c; break;
case 4: ((Uint32*)row)[x] = c; break;
}
SDL_UnlockSurface(SURFACE(this));
}
int Canvas::readPixel( int x, int y ) const
{
Uint32 bpp, ofs;
int c;
bpp = SURFACE(this)->format->BytesPerPixel;
ofs = SURFACE(this)->pitch*y;
char* row = (char*)SURFACE(this)->pixels + ofs;
SDL_LockSurface(SURFACE(this));
switch ( bpp ) {
case 2: c = ((Uint16*)row)[x]; break;
case 4: c = ((Uint32*)row)[x]; break;
default: c=0; break;
}
SDL_UnlockSurface(SURFACE(this));
return c;
}
void Canvas::drawLine( int x1, int y1, int x2, int y2, int color )
{
int lg_delta, sh_delta, cycle, lg_step, sh_step;
lg_delta = x2 - x1;
sh_delta = y2 - y1;
lg_step = Sgn(lg_delta);
lg_delta = Abs(lg_delta);
sh_step = Sgn(sh_delta);
sh_delta = Abs(sh_delta);
if (sh_delta < lg_delta) {
cycle = lg_delta >> 1;
while (x1 != x2) {
drawPixel( x1, y1, color);
cycle += sh_delta;
if (cycle > lg_delta) {
cycle -= lg_delta;
y1 += sh_step;
}
x1 += lg_step;
}
drawPixel( x1, y1, color);
}
cycle = sh_delta >> 1;
while (y1 != y2) {
drawPixel( x1, y1, color);
cycle += lg_delta;
if (cycle > sh_delta) {
cycle -= sh_delta;
x1 += lg_step;
}
y1 += sh_step;
}
drawPixel( x1, y1, color);
}
void Canvas::drawPath( const Path& path, int color, bool thick )
{
// allow for thick lines in clipping
Rect clip = m_clip;
clip.tl.x++; clip.tl.y++;
clip.br.x--; clip.br.y--;
int i=0;
const int n = path.numPoints();
for ( ; i<n && !clip.contains( path.point(i) ); i++ ) {
//skip clipped start pt
}
i++;
SDL_LockSurface(SURFACE(this));
for ( ; i<n; i++ ) {
// pt i-1 is guranteed to be inside clipping
const Vec2& p2 = path.point(i);
if ( clip.contains( p2 ) ) {
const Vec2& p1 = path.point(i-1);
switch ( SURFACE(this)->format->BytesPerPixel ) {
case 2:
if ( thick ) {
renderLine<Uint16,3>( SURFACE(this)->pixels,
SURFACE(this)->pitch,
p1.x, p1.y, p2.x, p2.y, color );
} else {
renderLine<Uint16,1>( SURFACE(this)->pixels,
SURFACE(this)->pitch,
p1.x, p1.y, p2.x, p2.y, color );
}
break;
case 4:
if ( thick ) {
renderLine<Uint32,3>( SURFACE(this)->pixels,
SURFACE(this)->pitch,
p1.x, p1.y, p2.x, p2.y, color );
} else {
renderLine<Uint32,1>( SURFACE(this)->pixels,
SURFACE(this)->pitch,
p1.x, p1.y, p2.x, p2.y, color );
}
break;
}
} else {
for ( ; i<n && !clip.contains( path.point(i) ); i++ ) {
//skip until we find a unclipped pt - this will be p1 next
//time around
}
}
}
SDL_UnlockSurface(SURFACE(this));
}
void Canvas::drawRect( int x, int y, int w, int h, int c, bool fill )
{
if ( fill ) {
Rect dest(x,y,x+w,y+h);
dest.clipTo(m_clip);
SDL_Rect r = { dest.tl.x, dest.tl.y, dest.width(), dest.height() };
SDL_FillRect( SURFACE(this), &r, c );
} else {
SDL_Rect f = { x, y, w, h };
SDL_Rect r;
r=f; r.h=1; SDL_FillRect( SURFACE(this), &r, c );
r.y+=f.h-1; SDL_FillRect( SURFACE(this), &r, c );
r=f; r.w=1; SDL_FillRect( SURFACE(this), &r, c );
r.x+=f.w-1; SDL_FillRect( SURFACE(this), &r, c );
}
}
void Canvas::drawRect( const Rect& r, int c, bool fill )
{
drawRect( r.tl.x, r.tl.y, r.br.x-r.tl.x+1, r.br.y-r.tl.y+1, c, fill );
}
Window::Window( int w, int h, const char* title, const char* winclass, bool fullscreen )
: m_title(title)
{
if ( winclass ) {
char s[80];
snprintf(s,80,"SDL_VIDEO_X11_WMCLASS=%s",winclass);
putenv(s);
}
#ifdef USE_HILDON
#if 0
m_state = SDL_SetVideoMode( w, h, 16, SDL_SWSURFACE);//SDL_FULLSCREEN);
SDL_WM_ToggleFullScreen( SURFACE(this) );
#else //n900
m_state = SDL_SetVideoMode( w, h, 0, SDL_SWSURFACE|SDL_FULLSCREEN);
#endif
SDL_ShowCursor( SDL_DISABLE );
#else
# ifdef FORCE_16BPP
m_state = SDL_SetVideoMode( w, h, 16, SDL_SWSURFACE | ((fullscreen==true)?(SDL_FULLSCREEN):(0)));
# else
m_state = SDL_SetVideoMode( w, h, 32, SDL_SWSURFACE | ((fullscreen==true)?(SDL_FULLSCREEN):(0)));
# endif
#endif
if ( SURFACE(this) == NULL ) {
throw "Unable to set video mode";
}
resetClip();
if ( title ) {
SDL_WM_SetCaption( title, title );
}
memset(&(Swipe::m_syswminfo), 0, sizeof(SDL_SysWMinfo));
SDL_VERSION(&(Swipe::m_syswminfo.version));
SDL_GetWMInfo(&(Swipe::m_syswminfo));
Swipe::lock(true);
#ifdef USE_HILDON
SDL_SysWMinfo sys;
SDL_VERSION( &sys.version );
SDL_GetWMInfo( &sys );
printf("X11 window =%08x\n",sys.info.x11.window);
printf("X11 fswindow =%08x\n",sys.info.x11.fswindow);
printf("X11 wmwindow =%08x\n",sys.info.x11.wmwindow);
uint32_t pid = getpid();
XChangeProperty( sys.info.x11.display,
sys.info.x11.wmwindow,
XInternAtom (sys.info.x11.display,
"_NET_WM_PID", False),
XA_CARDINAL, 32, PropModeReplace,
(unsigned char*)&pid, 1 );
// SDL_WM_SetCaption is broken on maemo4
XStoreName( sys.info.x11.display,
sys.info.x11.wmwindow,
title );
XStoreName( sys.info.x11.display,
sys.info.x11.fswindow,
title );
#if 0
/* Fremantle: tell maemo-status-volume daemon to ungrab keys */
unsigned long val = 1; /* ungrab, use 0 to grab */
XChangeProperty( sys.info.x11.display,
sys.info.x11.wmwindow,
XInternAtom(sys.info.x11.display,
"_HILDON_ZOOM_KEY_ATOM", False),
XA_INTEGER, 32,
PropModeReplace,
(unsigned char*)&val, 1);
#endif //0
#endif
}
void Window::update( const Rect& r )
{
if ( r.tl.x < width() && r.tl.y < height() ) {
int x1 = Max( 0, r.tl.x );
int y1 = Max( 0, r.tl.y );
int x2 = Min( width()-1, r.br.x );
int y2 = Min( height()-1, r.br.y );
int w = Max( 0, x2-x1 );
int h = Max( 0, y2-y1 );
if ( w > 0 && h > 0 ) {
SDL_UpdateRect( SURFACE(this), x1, y1, w, h );
#ifdef USE_HILDON
#if MAEMO_VERSION >= 5
static bool captured = false;
if (!captured) {
SDL_SysWMinfo sys;
SDL_VERSION( &sys.version );
SDL_GetWMInfo( &sys );
// setup hildon pre-load screenshot
XEvent xev = { 0 };
xev.xclient.type = ClientMessage;
xev.xclient.serial = 0;
xev.xclient.send_event = True;
xev.xclient.display = sys.info.x11.display;
xev.xclient.window = XDefaultRootWindow(xev.xclient.display);
xev.xclient.message_type = XInternAtom (xev.xclient.display,
"_HILDON_LOADING_SCREENSHOT",
False);
xev.xclient.format = 32;
xev.xclient.data.l[0] = 0;
//xev.xclient.data.l[1] = sys.info.x11.fswindow;
//xev.xclient.data.l[1] = sys.info.x11.wmwindow;
xev.xclient.data.l[1] = sys.info.x11.window;
XSendEvent (xev.xclient.display,
xev.xclient.window,
False,
SubstructureRedirectMask | SubstructureNotifyMask,
&xev);
XFlush (xev.xclient.display);
XSync (xev.xclient.display, False);
captured = true;
}
#endif
#endif
}
}
}
void Window::raise()
{
SDL_SysWMinfo sys;
SDL_VERSION( &sys.version );
SDL_GetWMInfo( &sys );
#if !defined(WIN32) && !(defined(__APPLE__) && defined(__MACH__))
/* No X11 stuff on Windows and Mac OS X */
// take focus...
XEvent ev = { 0 };
ev.xclient.type = ClientMessage;
ev.xclient.window = sys.info.x11.wmwindow;
ev.xclient.message_type = XInternAtom (sys.info.x11.display,
"_NET_ACTIVE_WINDOW", False);
ev.xclient.format = 32;
//all xewv.xclient.data==0 -> older spec?
XSendEvent (sys.info.x11.display,
DefaultRootWindow(sys.info.x11.display),
False,
NoEventMask, //SubstructureRedirectMask,
&ev);
XSync( sys.info.x11.display, False );
#endif
//XRaiseWindow( sys.info.x11.display, sys.info.x11.window );
}
void Window::setSubName( const char *sub )
{
#ifdef USE_HILDON
SDL_SysWMinfo sys;
SDL_VERSION( &sys.version );
SDL_GetWMInfo( &sys );
char title[128];
snprintf(title,128,"%s - %s\n",m_title.c_str(),sub);
title[127] = '\0';
// SDL_WM_SetCaption is broken on maemo4
XStoreName( sys.info.x11.display,
sys.info.x11.wmwindow,
title );
XStoreName( sys.info.x11.display,
sys.info.x11.fswindow,
title );
#endif
}
Image::Image( const char* file, bool alpha )
{
//alpha = false;
std::string f( "data/" );
SDL_Surface* img = IMG_Load((f+file).c_str());
if ( !img ) {
f = std::string( DEFAULT_RESOURCE_PATH "/" );
img = IMG_Load((f+file).c_str());
}
if ( img ) {
printf("loaded image %s\n",(f+file).c_str());
if ( alpha ) {
SDL_SetColorKey( img,
SDL_SRCCOLORKEY|SDL_RLEACCEL,
img->format->colorkey );
m_state = SDL_DisplayFormatAlpha( img );
} else {
m_state = SDL_DisplayFormat( img );
}
if ( m_state ) {
SDL_FreeSurface( img );
} else {
printf("warning image %s not converted to display format\n",(f+file).c_str());
m_state = img;
}
} else {
fprintf(stderr,"failed to load image %s\n",(f+file).c_str());
m_state = SDL_CreateRGBSurface( SDL_SWSURFACE, 32, 32,
SDL_GetVideoInfo()->vfmt->BitsPerPixel,
SDL_GetVideoInfo()->vfmt->Rmask,
SDL_GetVideoInfo()->vfmt->Gmask,
SDL_GetVideoInfo()->vfmt->Bmask,
SDL_GetVideoInfo()->vfmt->Amask );
drawRect(0,0,32,32,0xff0000);
}
resetClip();
}
int Canvas::writeBMP( const char* filename ) const
{
#pragma pack(push,1)
typedef struct {
unsigned short int type; /* Magic identifier */
unsigned int size; /* File size in bytes */
unsigned short int reserved1, reserved2;
unsigned int offset; /* Offset to image data, bytes */
} BMPHEADER;
typedef struct {
unsigned int size; /* Header size in bytes */
int width,height; /* Width and height of image */
unsigned short int planes; /* Number of colour planes */
unsigned short int bits; /* Bits per pixel */
unsigned int compression; /* Compression type */
unsigned int imagesize; /* Image size in bytes */
int xresolution,yresolution; /* Pixels per meter */
unsigned int ncolours; /* Number of colours */
unsigned int importantcolours; /* Important colours */
} BMPINFOHEADER;
int check_BMPHEADER[(sizeof(BMPHEADER)==14)-1];
int check_BMPINFOHEADER[(sizeof(BMPINFOHEADER)==40)-1];
#pragma pack(pop)
int w = width();
int h = height();
BMPHEADER head = { 'B'|('M'<<8), 14+40+w*h*3, 0, 0, 14+40 };
BMPINFOHEADER info = { 40, w, h, 1, 24, 0, w*h*3, 100, 100, 0, 0 };
FILE *f = fopen( filename, "wb" );
if ( f ) {
Uint32 bpp;
bpp = SURFACE(this)->format->BytesPerPixel;
fwrite( &head, 14, 1, f );
fwrite( &info, 40, 1, f );
for ( int y=h-1; y>=0; y-- ) {
for ( int x=0; x<w; x++ ) {
int p = readPixel( x, y );
if ( bpp==2 ) {
p = R16G16B16_TO_RGB888( R16(p), G16(p), B16(p) );
}
fwrite( &p, 3, 1, f );
}
}
fclose(f);
return 1;
}
return 0;
}