static void draw_scene(Evas *canvas)
{
Eina_List *updates, *n;
Eina_Rectangle *update;
// render and get the updated rectangles:
updates = evas_render_updates(canvas);
// informative only here, just print the updated areas:
EINA_LIST_FOREACH(updates, n, update)
printf("UPDATED REGION: pos: %3d, %3d size: %3dx%3d\n",
update->x, update->y, update->w, update->h);
// free list of updates
evas_render_updates_free(updates);
}
int main( int argc, char *argv[] )
{
IDirectFB *dfb;
IDirectFBDisplayLayer *layer;
IDirectFBSurface *bgsurface;
IDirectFBImageProvider *provider;
IDirectFBWindow *window1;
IDirectFBWindow *window2;
IDirectFBSurface *window_surface1;
IDirectFBSurface *window_surface2;
IDirectFBEventBuffer *buffer;
DFBDisplayLayerConfig layer_config;
#if ((DIRECTFB_MAJOR_VERSION == 0) && (DIRECTFB_MINOR_VERSION == 9) && (DIRECTFB_MICRO_VERSION < 23))
DFBCardCapabilities caps;
#else
DFBGraphicsDeviceDescription caps;
#endif
IDirectFBWindow* upper;
DFBWindowID id1;
IDirectFBFont *font;
int fontheight;
int err;
int quit = 0;
DFBCHECK(DirectFBInit( &argc, &argv ));
DFBCHECK(DirectFBCreate( &dfb ));
#if ((DIRECTFB_MAJOR_VERSION == 0) && (DIRECTFB_MINOR_VERSION == 9) && (DIRECTFB_MICRO_VERSION < 23))
dfb->GetCardCapabilities( dfb, &caps );
#else
dfb->GetDeviceDescription( dfb, &caps );
#endif
dfb->GetDisplayLayer( dfb, DLID_PRIMARY, &layer );
if (!((caps.blitting_flags & DSBLIT_BLEND_ALPHACHANNEL) &&
(caps.blitting_flags & DSBLIT_BLEND_COLORALPHA )))
{
layer_config.flags = DLCONF_BUFFERMODE;
layer_config.buffermode = DLBM_BACKSYSTEM;
layer->SetConfiguration( layer, &layer_config );
}
layer->GetConfiguration( layer, &layer_config );
layer->EnableCursor ( layer, 1 );
{
DFBFontDescription desc;
desc.flags = DFDESC_HEIGHT;
desc.height = layer_config.width/50;
DFBCHECK(dfb->CreateFont( dfb, PACKAGE_DATA_DIR"/grunge.ttf", &desc, &font ));
font->GetHeight( font, &fontheight );
}
{
DFBSurfaceDescription desc;
DFBCHECK(dfb->CreateImageProvider( dfb,
PACKAGE_DATA_DIR"/bg.png",
&provider ));
desc.flags = DSDESC_WIDTH | DSDESC_HEIGHT;
desc.width = layer_config.width;
desc.height = layer_config.height;
DFBCHECK(dfb->CreateSurface( dfb, &desc, &bgsurface ) );
provider->RenderTo( provider, bgsurface, NULL );
provider->Release( provider );
DFBCHECK(bgsurface->SetFont( bgsurface, font ));
bgsurface->SetColor( bgsurface, 0xCF, 0xCF, 0xFF, 0xFF );
bgsurface->DrawString( bgsurface,
"Move the mouse over a window to activate it.",
-1, 10, 0, DSTF_LEFT | DSTF_TOP );
bgsurface->SetColor( bgsurface, 0xFF, 0xCF, 0xFF, 0xFF );
bgsurface->DrawString( bgsurface,
"You can drag them around, too, if you want.",
-1, 10 , 40, DSTF_LEFT | DSTF_TOP );
bgsurface->SetColor( bgsurface, 0xCF, 0xCF, 0xFF, 0xFF );
bgsurface->DrawString( bgsurface,
"The one with funky stuff happening and things flying around is an evas.",
-1, 10, 80, DSTF_LEFT | DSTF_TOP );
layer->SetBackgroundImage( layer, bgsurface );
layer->SetBackgroundMode( layer, DLBM_IMAGE );
}
{
DFBWindowDescription desc;
desc.flags = ( DWDESC_POSX | DWDESC_POSY |
DWDESC_WIDTH | DWDESC_HEIGHT | DWDESC_CAPS );
desc.posx = 20;
desc.posy = 120;
desc.width = 200;
desc.height = 200;
desc.caps = DWCAPS_ALPHACHANNEL;
DFBCHECK( layer->CreateWindow( layer, &desc, &window2 ) );
window2->GetSurface( window2, &window_surface2 );
window2->SetOpacity( window2, 0xFF );
window2->CreateEventBuffer( window2, &buffer );
{
window_surface2->SetColor( window_surface2,
0x00, 0x30, 0x10, 0xc0 );
window_surface2->DrawRectangle( window_surface2, 0, 0,
desc.width, desc.height );
window_surface2->SetColor( window_surface2,
0x80, 0xa0, 0x00, 0x90 );
window_surface2->FillRectangle( window_surface2, 1, 1,
desc.width-2, desc.height-2 );
DFBCHECK(window_surface2->SetFont(window_surface2, font ));
window_surface2->SetColor( window_surface2, 0xCF, 0xFF, 0xCF, 0xFF );
window_surface2->DrawString( window_surface2,
"Pants!",
-1,10, fontheight + 5, DSTF_LEFT | DSTF_TOP );
}
window_surface2->Flip( window_surface2, NULL, 0 );
}
{
DFBWindowDescription desc;
desc.flags = ( DWDESC_POSX | DWDESC_POSY |
DWDESC_WIDTH | DWDESC_HEIGHT | DWDESC_CAPS );
desc.posx = 200;
desc.posy = 200;
desc.width = 240;
desc.height = 320;
desc.caps = DWCAPS_ALPHACHANNEL;
DFBCHECK(layer->CreateWindow( layer, &desc, &window1 ) );
window1->GetSurface( window1, &window_surface1 );
window_surface1->SetColor( window_surface1, 0xFF, 0x20, 0x20, 0x90 );
window_surface1->DrawRectangle( window_surface1, 0, 0,
desc.width, desc.height );
window_surface1->Flip( window_surface1, NULL, 0 );
window1->SetOpacity( window1, 0xFF );
window1->GetID( window1, &id1 );
window1->AttachEventBuffer( window1, buffer );
}
window1->RequestFocus( window1 );
window1->RaiseToTop( window1 );
upper = window1;
{
evas_init();
evas = evas_new();
evas_output_method_set(evas, evas_render_method_lookup("directfb"));
evas_output_size_set(evas, 240, 320);
evas_output_viewport_set(evas, 0, 0, 240, 320);
{
Evas_Engine_Info_DirectFB *einfo;
einfo = (Evas_Engine_Info_DirectFB *) evas_engine_info_get(evas);
einfo->info.dfb = dfb;
einfo->info.surface = window_surface1;
einfo->info.flags = DSDRAW_BLEND;
evas_engine_info_set(evas, (Evas_Engine_Info *) einfo);
}
setup();
evas_render(evas);
start_time = get_time();
}
while (!quit) {
static IDirectFBWindow* active = NULL;
static int grabbed = 0;
static int startx = 0;
static int starty = 0;
static int endx = 0;
static int endy = 0;
DFBWindowEvent evt;
buffer->WaitForEventWithTimeout( buffer, 0, 10 );
while (buffer->GetEvent( buffer, DFB_EVENT(&evt) ) == DFB_OK) {
IDirectFBWindow* window;
if (evt.window_id == id1)
window = window1;
else
window = window2;
if (active) {
switch (evt.type) {
case DWET_BUTTONDOWN:
if (!grabbed && evt.button == DIBI_LEFT) {
grabbed = 1;
layer->GetCursorPosition( layer,
&startx, &starty );
window->GrabPointer( window );
}
break;
case DWET_BUTTONUP:
switch (evt.button) {
case DIBI_LEFT:
if (grabbed) {
window->UngrabPointer( window );
grabbed = 0;
}
break;
case DIBI_MIDDLE:
upper->LowerToBottom( upper );
upper = (upper == window1) ? window2 : window1;
break;
case DIBI_RIGHT:
quit = DIKS_DOWN;
break;
default:
break;
}
break;
case DWET_KEYDOWN:
if (grabbed)
break;
switch (evt.key_id) {
case DIKI_RIGHT:
active->Move (active, 1, 0);
break;
case DIKI_LEFT:
active->Move (active, -1, 0);
break;
case DIKI_UP:
active->Move (active, 0, -1);
break;
case DIKI_DOWN:
active->Move (active, 0, 1);
break;
default:
break;
}
break;
case DWET_LOSTFOCUS:
if (!grabbed)
active = NULL;
break;
default:
break;
}
}
else if (evt.type == DWET_GOTFOCUS)
active = window;
switch (evt.type) {
case DWET_MOTION:
endx = evt.cx;
endy = evt.cy;
break;
case DWET_KEYDOWN:
switch (evt.key_symbol) {
case DIKS_ESCAPE:
case DIKS_SMALL_Q:
case DIKS_CAPITAL_Q:
case DIKS_BACK:
case DIKS_STOP:
quit = 1;
break;
default:
break;
}
break;
default:
break;
}
}
if (active) {
if (grabbed) {
active->Move( active, endx - startx, endy - starty);
startx = endx;
starty = endy;
}
active->SetOpacity( active,
(sin( myclock()/300.0 ) * 85) + 170 );
}
loop();
{
Eina_List *updates;
updates = evas_render_updates(evas);
/* efficient update.. only flip the rectangle regions that changed! */
if (updates)
{
DFBRegion region;
Eina_List *l;
for (l = updates; l; l = l->next)
{
Evas_Rectangle *rect;
rect = l->data;
region.x1 = rect->x;
region.y1 = rect->y;
region.x2 = rect->x + rect->w - 1;
region.y2 = rect->y + rect->h - 1;
window_surface1->Flip(window_surface1, ®ion,
DSFLIP_BLIT);
}
evas_render_updates_free(updates);
}
}
}
buffer->Release( buffer );
window_surface2->Release( window_surface2 );
window_surface1->Release( window_surface1 );
window2->Release( window2 );
window1->Release( window1 );
layer->Release( layer );
bgsurface->Release( bgsurface );
dfb->Release( dfb );
evas_shutdown();
return 0;
}
