prettify MultiContent TitleList
[enigma2.git] / lib / gui / ewidgetdesktop.cpp
index fb0f39ddacaad7495fb26ba60ab8b3ef70372029..63aeaaceb999c0f6b731a86ff12a47862ad83231 100644 (file)
@@ -5,42 +5,58 @@
 
 extern void dumpRegion(const gRegion &region);
 
-void eWidgetDesktop::addRootWidget(eWidget *root, int top)
+void eWidgetDesktop::addRootWidget(eWidget *root)
 {
        assert(!root->m_desktop);
        
+       int invert_sense = 0;
                /* buffered mode paints back-to-front, while immediate mode is front-to-back. */
        if (m_comp_mode == cmBuffered)
-               top = !top;
+               invert_sense = 1;
+       
+       ePtrList<eWidget>::iterator insert_position = m_root.begin();
+       
+       for (;;)
+       {
+               if ((insert_position == m_root.end()) || (invert_sense ^ (insert_position->m_z_position < root->m_z_position)))
+               {
+                       m_root.insert(insert_position, root);
+                       break;
+               }
+               ++insert_position;
+       }
        
-       if (top)
-               m_root.push_back(root);
-       else
-               m_root.push_front(root);
        root->m_desktop = this;
 
                /* the creation will be postponed. */
-       root->m_comp_buffer = 0;
+       for (int i = 0; i < MAX_LAYER; ++i)
+               root->m_comp_buffer[i] = 0;
 }
 
 void eWidgetDesktop::removeRootWidget(eWidget *root)
 {
        if (m_comp_mode == cmBuffered)
-               removeBufferForWidget(root);
+       {
+               for (int i = 0; i < MAX_LAYER; ++i)
+                       removeBufferForWidget(root, i);
+       }
 
        m_root.remove(root);
 }
 
 int eWidgetDesktop::movedWidget(eWidget *root)
 {
-       if ((m_comp_mode == cmBuffered) && (root->m_comp_buffer))
+       if (m_comp_mode != cmBuffered)
+               return -1; /* native move not supported */
+
+       for (int i = 0; i < MAX_LAYER; ++i)
        {
-               root->m_comp_buffer->m_position = root->position();
+               if (root->m_comp_buffer[i])
+                       root->m_comp_buffer[i]->m_position = root->position();
 //             redrawComposition(0);
-               return 0;
        }
-       
-       return -1;
+
+       return 0; /* native move ok */
 }
 
 void eWidgetDesktop::calcWidgetClipRegion(eWidget *widget, gRegion &parent_visible)
@@ -51,10 +67,10 @@ void eWidgetDesktop::calcWidgetClipRegion(eWidget *widget, gRegion &parent_visib
                widget->m_visible_region = widget->m_clip_region;
                widget->m_visible_region.moveBy(widget->position());
                widget->m_visible_region &= parent_visible; // in parent space!
-                       /* TODO: check transparency here! */
 
-                       /* remove everything this widget will contain from parent's visible list */
-               parent_visible -= widget->m_visible_region; // will remove child regions too!
+               if (!widget->isTransparent())
+                               /* remove everything this widget will contain from parent's visible list, unless widget is transparent. */
+                       parent_visible -= widget->m_visible_region; // will remove child regions too!
 
                        /* now prepare for recursing to childs */
                widget->m_visible_region.moveBy(-widget->position());            // now in local space
@@ -63,11 +79,22 @@ void eWidgetDesktop::calcWidgetClipRegion(eWidget *widget, gRegion &parent_visib
 
        widget->m_visible_with_childs = widget->m_visible_region;
        
-       for (ePtrList<eWidget>::iterator i(widget->m_childs.begin()); i != widget->m_childs.end(); ++i)
-               if (i->m_vis & eWidget::wVisShow)
-                       calcWidgetClipRegion(*i, widget->m_visible_region);
-               else
-                       clearVisibility(*i);
+                       /* add childs in reverse (Z) order - we're going from front-to-bottom here. */
+       ePtrList<eWidget>::iterator i(widget->m_childs.end());
+       
+       for (;;)
+       {
+               if (i != widget->m_childs.end())
+               {
+                       if (i->m_vis & eWidget::wVisShow)
+                               calcWidgetClipRegion(*i, widget->m_visible_region);
+                       else
+                               clearVisibility(*i);
+               }
+               if (i == widget->m_childs.begin())
+                       break;
+               --i;
+       }
 }
 
 void eWidgetDesktop::recalcClipRegions(eWidget *root)
@@ -104,60 +131,98 @@ void eWidgetDesktop::recalcClipRegions(eWidget *root)
                if (!root->m_vis & eWidget::wVisShow)
                {
                        clearVisibility(root);
-                       removeBufferForWidget(root);
+                       for (int i = 0; i < MAX_LAYER; ++i)
+                               removeBufferForWidget(root, i);
                        return;
                }
-               if ((!root->m_comp_buffer) || (root->size() != root->m_comp_buffer->m_screen_size))
-                       createBufferForWidget(root);
 
-               eWidgetDesktopCompBuffer *comp = root->m_comp_buffer;
+               for (int i = 0; i < MAX_LAYER; ++i)
+               {
+                       eWidgetDesktopCompBuffer *comp = root->m_comp_buffer[i];
+
+                                       /* TODO: layers might not be required to have the screen size, for memory reasons. */
+                       if ((i == 0 && !comp) || (comp && (root->size() != comp->m_screen_size)))
+                               createBufferForWidget(root, 0);
 
-               gRegion visible_before = root->m_visible_with_childs;
-                
-               comp->m_background_region = gRegion(eRect(comp->m_position, comp->m_screen_size));
-               
-               gRegion visible_new = root->m_visible_with_childs - visible_before;
-               gRegion visible_lost = visible_before - root->m_visible_with_childs;
-               visible_new.moveBy(root->position());
-               visible_lost.moveBy(root->position());
-               
-                       /* this sucks, obviously. */
-               invalidate(visible_new);
-               invalidate(visible_lost);
-               
-               calcWidgetClipRegion(root, comp->m_background_region);
+                       comp = root->m_comp_buffer[i]; /* it might have changed. */
+
+                                       /* CHECKME: don't we need to recalculate everything? after all, our buffer has changed and is likely to be cleared */
+                       gRegion visible_before = root->m_visible_with_childs;
+
+                       comp->m_background_region = gRegion(eRect(comp->m_position, comp->m_screen_size));
+
+                       gRegion visible_new = root->m_visible_with_childs - visible_before;
+                       gRegion visible_lost = visible_before - root->m_visible_with_childs;
+                       visible_new.moveBy(root->position());
+                       visible_lost.moveBy(root->position());
+
+                       invalidate(visible_new, root, i);
+                       invalidate(visible_lost, root, i);
+
+                       calcWidgetClipRegion(root, comp->m_background_region);
+               }
+       }
+}
+
+void eWidgetDesktop::invalidateWidgetLayer(const gRegion &region, const eWidget *widget, int layer)
+{
+       if (m_comp_mode == cmImmediate)
+       {
+               invalidate(region);
+               return;
        }
+       eWidgetDesktopCompBuffer *comp = widget->m_comp_buffer[layer];
+       if (comp)
+               comp->m_dirty_region |= region;
 }
 
-void eWidgetDesktop::invalidate(const gRegion &region)
+void eWidgetDesktop::invalidateWidget(const gRegion &region, const eWidget *widget, int layer)
+{
+       if (m_comp_mode == cmImmediate)
+       {
+               invalidate(region);
+               return;
+       }
+
+       if (!(widget->m_vis & eWidget::wVisShow))
+               return;
+
+       gRegion mregion = region;
+       if (layer == -1)
+               for (int layer = 0; layer < MAX_LAYER; ++layer)
+                       invalidateWidgetLayer(mregion, widget, layer);
+       else
+               invalidateWidgetLayer(mregion, widget, layer);
+}
+
+void eWidgetDesktop::invalidate(const gRegion &region, const eWidget *widget, int layer)
 {
        if (region.empty())
                return;
-       
+
        if (m_timer && !m_require_redraw)
                m_timer->start(0, 1); // start singleshot redraw timer
-       
+
        m_require_redraw = 1;
-       
+
        if (m_comp_mode == cmImmediate)
+       {
+                       /* in immediate mode, we don't care for widget and layer, we use the topmost. */
                m_screen.m_dirty_region |= region;
-       else
-               for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
-               {
-                       if (!(i->m_vis & eWidget::wVisShow))
-                               continue;
-                       
-                       eWidgetDesktopCompBuffer *comp = i->m_comp_buffer;
-                       
-                       gRegion mregion = region;
-                       comp->m_dirty_region |= mregion;
-               }
+       } else
+       {
+               if (!widget)
+                       for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
+                               invalidateWidget(region, i);
+               else
+                       invalidateWidget(region, widget, layer);
+       }
 }
 
 void eWidgetDesktop::setBackgroundColor(eWidgetDesktopCompBuffer *comp, gRGB col)
 {
        comp->m_background_color = col;
-       
+
                /* if there's something visible from the background, redraw it with the new color. */
        if (comp->m_dc && comp->m_background_region.valid() && !comp->m_background_region.empty())
        {
@@ -175,7 +240,11 @@ void eWidgetDesktop::setBackgroundColor(gRGB col)
 
        if (m_comp_mode == cmBuffered)
                for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
-                       setBackgroundColor(i->m_comp_buffer, col);
+               {
+                       for (int l = 0; l < MAX_LAYER; ++l)
+                               if (i->m_comp_buffer[l])
+                                       setBackgroundColor(i->m_comp_buffer[l], l ? gRGB(0, 0, 0, 0) : col); /* all layers above 0 will have a transparent background */
+               }
 }
 
 void eWidgetDesktop::setPalette(gPixmap &pm)
@@ -191,15 +260,23 @@ void eWidgetDesktop::setPalette(gPixmap &pm)
        {
                for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
                {
-                       ASSERT(i->m_comp_buffer->m_dc);
-                       gPainter painter(i->m_comp_buffer->m_dc);
-                       painter.setPalette(&pm);
+                       for (int l = 0; l < MAX_LAYER; ++l)
+                       {
+                               if (!i->m_comp_buffer[l])
+                                       continue;
+                               ASSERT(i->m_comp_buffer[l]->m_dc);
+                               gPainter painter(i->m_comp_buffer[l]->m_dc);
+                               painter.setPalette(&pm);
+                       }
                }
        }
 }
 
 void eWidgetDesktop::paintBackground(eWidgetDesktopCompBuffer *comp)
 {
+       if (!comp)
+               return;
+
        comp->m_dirty_region &= comp->m_background_region;
        
        gPainter painter(comp->m_dc);
@@ -207,37 +284,48 @@ void eWidgetDesktop::paintBackground(eWidgetDesktopCompBuffer *comp)
        painter.resetClip(comp->m_dirty_region);
        painter.setBackgroundColor(comp->m_background_color);
        painter.clear();
-       painter.flush();
        
        comp->m_dirty_region = gRegion();
 }
 
+
+void eWidgetDesktop::paintLayer(eWidget *widget, int layer)
+{
+       eWidgetDesktopCompBuffer *comp = (m_comp_mode == cmImmediate) ? &m_screen : widget->m_comp_buffer[layer];
+       if (m_comp_mode == cmImmediate)
+               ASSERT(layer == 0);
+       if (!comp)
+               return;
+       gPainter painter(comp->m_dc);
+       painter.moveOffset(-comp->m_position);
+       widget->doPaint(painter, comp->m_dirty_region, layer);
+       painter.resetOffset();
+}
+
 void eWidgetDesktop::paint()
 {
        m_require_redraw = 0;
-       
+
                /* walk all root windows. */
        for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
        {
-               eWidgetDesktopCompBuffer *comp = (m_comp_mode == cmImmediate) ? &m_screen : i->m_comp_buffer;
-               
+
                if (!(i->m_vis & eWidget::wVisShow))
                        continue;
-               
-               {
-                       gPainter painter(comp->m_dc);
-                       painter.moveOffset(-comp->m_position);
-                       i->doPaint(painter, comp->m_dirty_region);
-                       painter.resetOffset();
-               }
 
-               if (m_comp_mode != cmImmediate)
-                       paintBackground(comp);
+               if (m_comp_mode == cmImmediate)
+                       paintLayer(i, 0);
+               else
+                       for (int l = 0; l < MAX_LAYER; ++l)
+                       {
+                               paintLayer(i, l);
+                               paintBackground(i->m_comp_buffer[l]);
+                       }
        }
-       
+
        if (m_comp_mode == cmImmediate)
                paintBackground(&m_screen);
-       
+
        if (m_comp_mode == cmBuffered)
        {
 //             redrawComposition(0);
@@ -255,38 +343,45 @@ void eWidgetDesktop::setRedrawTask(eMainloop &ml)
 {
        if (m_mainloop)
        {
-               delete m_timer;
                m_timer = 0;
                m_mainloop = 0;
        }
        m_mainloop = &ml;
-       m_timer = new eTimer(m_mainloop);
+       m_timer = eTimer::create(m_mainloop);
        CONNECT(m_timer->timeout, eWidgetDesktop::paint);
        
        if (m_require_redraw)
                m_timer->start(0, 1);
 }
 
+void eWidgetDesktop::makeCompatiblePixmap(ePtr<gPixmap> &pm)
+{
+       makeCompatiblePixmap(*(pm.operator->()));
+}
+
 void eWidgetDesktop::makeCompatiblePixmap(gPixmap &pm)
 {
        if (m_comp_mode != cmImmediate)
                return;
        
-       eDebug("widgetDesktop: make compatible pixmap of %p\n", &pm);
+//     eDebug("widgetDesktop: make compatible pixmap of %p", &pm);
        if (!m_screen.m_dc)
        {
                eWarning("eWidgetDesktop: no DC to make pixmap compatible with!");
                return;
        }
 
-       ePtr<gDC> pixmap_dc = new gDC(&pm);
-       gPainter pixmap_painter(pixmap_dc);
-       
        ePtr<gPixmap> target_pixmap;
        m_screen.m_dc->getPixmap(target_pixmap);
        
        assert(target_pixmap);
        
+       if (target_pixmap->surface && target_pixmap->surface->bpp > 8)
+               return;
+
+       ePtr<gDC> pixmap_dc = new gDC(&pm);
+       gPainter pixmap_painter(pixmap_dc);
+       
        pixmap_painter.mergePalette(target_pixmap);
 }
 
@@ -296,17 +391,19 @@ void eWidgetDesktop::setCompositionMode(int mode)
        
        if (mode == cmBuffered)
                for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
-                       createBufferForWidget(*i);
+                       createBufferForWidget(*i, 0);
        else
                for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
-                       removeBufferForWidget(*i);
+                       for (int l = 0; l < MAX_LAYER; ++l)
+                               removeBufferForWidget(*i, l);
 }
 
-eWidgetDesktop::eWidgetDesktop(eSize size): m_mainloop(0), m_timer(0)
+eWidgetDesktop::eWidgetDesktop(eSize size): m_mainloop(0)
 {
        m_screen.m_dirty_region = gRegion(eRect(ePoint(0, 0), size));
        m_screen.m_screen_size = size;
        m_require_redraw = 0;
+       m_style_id = 0;
 
        CONNECT(gRC::getInstance()->notify, eWidgetDesktop::notify);
        setCompositionMode(cmImmediate);
@@ -314,44 +411,49 @@ eWidgetDesktop::eWidgetDesktop(eSize size): m_mainloop(0), m_timer(0)
 
 eWidgetDesktop::~eWidgetDesktop()
 {
+               /* tell registered root windows that they no longer have a desktop. */
+       for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); )
+       {
+               i->m_desktop = 0;
+               i = m_root.erase(i);
+       }
                /* destroy all buffers */
        setCompositionMode(-1);
 }
 
-void eWidgetDesktop::createBufferForWidget(eWidget *widget)
+void eWidgetDesktop::createBufferForWidget(eWidget *widget, int layer)
 {
-       removeBufferForWidget(widget);
-       
-       eWidgetDesktopCompBuffer *comp = widget->m_comp_buffer = new eWidgetDesktopCompBuffer;
-       
-       eDebug("create buffer for widget, %d x %d\n", widget->size().width(), widget->size().height());
-       
+       removeBufferForWidget(widget, layer);
+
+       eWidgetDesktopCompBuffer *comp = widget->m_comp_buffer[layer] = new eWidgetDesktopCompBuffer;
+
+       eDebug("create buffer for widget layer %d, %d x %d\n", layer, widget->size().width(), widget->size().height());
+
        eRect bbox = eRect(widget->position(), widget->size());
        comp->m_position = bbox.topLeft();
        comp->m_dirty_region = gRegion(eRect(ePoint(0, 0), bbox.size()));
        comp->m_screen_size = bbox.size();
                /* TODO: configurable bit depth. */
-       
+
                /* clone palette. FIXME. */
        ePtr<gPixmap> pm = new gPixmap(comp->m_screen_size, 32, 1), pm_screen;
        pm->surface->clut.data = new gRGB[256];
        pm->surface->clut.colors = 256;
        pm->surface->clut.start = 0;
-       
-       
+
        m_screen.m_dc->getPixmap(pm_screen);
-       
+
        memcpy(pm->surface->clut.data, pm_screen->surface->clut.data, 256 * sizeof(gRGB));
 
        comp->m_dc = new gDC(pm);
 }
 
-void eWidgetDesktop::removeBufferForWidget(eWidget *widget)
+void eWidgetDesktop::removeBufferForWidget(eWidget *widget, int layer)
 {
-       if (widget->m_comp_buffer)
+       if (widget->m_comp_buffer[layer])
        {
-               delete widget->m_comp_buffer;
-               widget->m_comp_buffer = 0;
+               delete widget->m_comp_buffer[layer];
+               widget->m_comp_buffer[layer] = 0;
        }
 }
 
@@ -371,10 +473,14 @@ void eWidgetDesktop::redrawComposition(int notified)
        {
                if (!i->isVisible())
                        continue;
-               ePtr<gPixmap> pm;
-               ASSERT(i->m_comp_buffer);
-               i->m_comp_buffer->m_dc->getPixmap(pm);
-               p.blit(pm, i->m_comp_buffer->m_position, eRect(), gPixmap::blitAlphaBlend);
+               for (int layer = 0; layer < MAX_LAYER; ++layer)
+               {
+                       ePtr<gPixmap> pm;
+                       if (!i->m_comp_buffer[layer])
+                               continue;
+                       i->m_comp_buffer[layer]->m_dc->getPixmap(pm);
+                       p.blit(pm, i->m_comp_buffer[layer]->m_position, eRect(), gPixmap::blitAlphaBlend);
+               }
        }
 
                // flip activates on next vsync.        
@@ -400,3 +506,9 @@ void eWidgetDesktop::clearVisibility(eWidget *widget)
        for (ePtrList<eWidget>::iterator i(widget->m_childs.begin()); i != widget->m_childs.end(); ++i)
                clearVisibility(*i);
 }
+
+void eWidgetDesktop::resize(eSize size)
+{
+       m_screen.m_dirty_region = gRegion(eRect(ePoint(0, 0), size));
+       m_screen.m_screen_size = size;
+}