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; }