* Added a Desktop::BroadcastToAllWindows() method that sends all ServerWindows

a message.
* The DesktopSettings class is now using that to send the new
  AS_SYSTEM_FONT_CHANGED message to all windows.
* The ServerWindow now propagates font changes to its decorator, causing it
  to update its drawing. That means changing the bold font in the "Fonts"
  preferences application will instantly change all window titles.
* Factored out a _RebuildAndRedrawAfterWindowChange() out of several Desktop
  methods, simplifying some code.
* The DefaultDecorator no longer calls _DoLayout() twice (through SetLook()),
  but instead calls the new _UpdateFont() method now also called by
  FontsChanged(), and SetLook().
* BWindow::GetDecoratorSettings() now also includes "tab frame" BRect with the
  exact footprint of the tab, allowing apps to know the size of the tab to
  position itself accordingly.
* Automatic white space cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28664 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/app/ServerProtocol.h

@@ -110,6 +110,7 @@ enum {
 	AS_SET_SYSTEM_FONT,
 	AS_GET_SYSTEM_FONTS,
 	AS_GET_SYSTEM_DEFAULT_FONT,
+	AS_SYSTEM_FONT_CHANGED,
 
 	AS_GET_FONT_LIST_REVISION,
 	AS_GET_FAMILY_AND_STYLES,

src/servers/app/Decorator.cpp

@@ -100,14 +100,11 @@ Decorator::SetFlags(uint32 flags, BRegion* updateRegion)
 }
 
 
-/*!	\brief Sets the decorator's font
+/*!	\brief Called whenever the system fonts are changed.
-	\param font The new font object to copy from
 */
 void
-Decorator::SetFont(ServerFont *font)
+Decorator::FontsChanged(DesktopSettings& settings, BRegion* updateRegion)
 {
-	if (font)
-		fDrawState.SetFont(*font);
 }
 
 

src/servers/app/Decorator.h

@@ -53,8 +53,9 @@ public:
 			void			SetDrawingEngine(DrawingEngine *driver);
 	inline	DrawingEngine*	GetDrawingEngine() const
 								{ return fDrawingEngine; }
-			void			SetFont(ServerFont *font);
 
+	virtual void			FontsChanged(DesktopSettings& settings,
+								BRegion* updateRegion = NULL);
 	virtual void			SetLook(DesktopSettings& settings, window_look look,
 								BRegion* updateRegion = NULL);
 	virtual void			SetFlags(uint32 flags,

src/servers/app/DefaultDecorator.cpp

@@ -90,7 +90,7 @@ DefaultDecorator::DefaultDecorator(DesktopSettings& settings, BRect rect,
 	fTabLocation(0.0),
 	fLastClicked(0)
 {
-	DefaultDecorator::SetLook(settings, look);
+	_UpdateFont(settings);
 
 	// common colors to both focus and non focus state
 	fFrameColors[0] = (rgb_color){ 152, 152, 152, 255 };
@@ -159,6 +159,27 @@ DefaultDecorator::SetTitle(const char* string, BRegion* updateRegion)
 }
 
 
+void
+DefaultDecorator::FontsChanged(DesktopSettings& settings, BRegion* updateRegion)
+{
+	// get previous extent
+	if (updateRegion != NULL) {
+		BRegion extent;
+		GetFootprint(&extent);
+		updateRegion->Include(&extent);
+	}
+
+	_UpdateFont(settings);
+	_DoLayout();
+
+	if (updateRegion != NULL) {
+		BRegion extent;
+		GetFootprint(&extent);
+		updateRegion->Include(&extent);
+	}
+}
+
+
 void
 DefaultDecorator::SetLook(DesktopSettings& settings, window_look look,
 	BRegion* updateRegion)
@@ -172,19 +193,9 @@ DefaultDecorator::SetLook(DesktopSettings& settings, window_look look,
 		updateRegion->Include(&extent);
 	}
 
-	ServerFont font;
+	fLook = look;
-	if (look == B_FLOATING_WINDOW_LOOK || look == kLeftTitledWindowLook) {
-		settings.GetDefaultPlainFont(font);
-		if (look == kLeftTitledWindowLook)
-			font.SetRotation(90.0f);
-	} else
-		settings.GetDefaultBoldFont(font);
 
-	font.SetFlags(B_FORCE_ANTIALIASING);
+	_UpdateFont(settings);
-	font.SetSpacing(B_STRING_SPACING);
-	SetFont(&font);
-
-	Decorator::SetLook(settings, look, updateRegion);
 	_DoLayout();
 
 	if (updateRegion != NULL) {
@@ -435,6 +446,9 @@ DefaultDecorator::GetSettings(BMessage* settings) const
 	if (!fTabRect.IsValid())
 		return false;
 
+	if (settings->AddRect("tab frame", fTabRect) != B_OK)
+		return false;
+
 	return settings->AddFloat("tab location", (float)fTabOffset) == B_OK;
 }
 
@@ -669,8 +683,8 @@ DefaultDecorator::_DoLayout()
 			fMinTabSize += offset + size;
 
 		// fMaxTabSize contains fMinWidth + the width required for the title
-		fMaxTabSize = fDrawingEngine ?
+		fMaxTabSize = fDrawingEngine
-			ceilf(fDrawingEngine->StringWidth(Title(), strlen(Title()),
+			? ceilf(fDrawingEngine->StringWidth(Title(), strlen(Title()),
 				fDrawState.Font())) : 0.0;
 		if (fMaxTabSize > 0.0)
 			fMaxTabSize += fTextOffset;
@@ -1098,6 +1112,23 @@ DefaultDecorator::_SetColors()
 }
 
 
+void
+DefaultDecorator::_UpdateFont(DesktopSettings& settings)
+{
+	ServerFont font;
+	if (fLook == B_FLOATING_WINDOW_LOOK || fLook == kLeftTitledWindowLook) {
+		settings.GetDefaultPlainFont(font);
+		if (fLook == kLeftTitledWindowLook)
+			font.SetRotation(90.0f);
+	} else
+		settings.GetDefaultBoldFont(font);
+
+	font.SetFlags(B_FORCE_ANTIALIASING);
+	font.SetSpacing(B_STRING_SPACING);
+	fDrawState.SetFont(font);
+}
+
+
 void
 DefaultDecorator::_DrawButtonBitmap(ServerBitmap* bitmap, BRect rect)
 {

src/servers/app/DefaultDecorator.h

@@ -25,6 +25,8 @@ public:
 
 	virtual	void				SetTitle(const char* string,
 									BRegion* updateRegion = NULL);
+	virtual void				FontsChanged(DesktopSettings& settings,
+									BRegion* updateRegion);
 	virtual void				SetLook(DesktopSettings& settings,
 									window_look look,
 									BRegion* updateRegion = NULL);
@@ -68,6 +70,7 @@ protected:
 	virtual void				_SetColors();
 
 private:
+			void				_UpdateFont(DesktopSettings& settings);
  			void				_DrawButtonBitmap(ServerBitmap* bitmap,
  									BRect rect);
 			void				_DrawBlendedRect(DrawingEngine *engine,

src/servers/app/Desktop.cpp

@@ -709,8 +709,7 @@ Desktop::_ActivateApp(team_id team)
 }
 
 
-/*!
+/*!	\brief Send a quick (no attachments) message to all applications.
-	\brief Send a quick (no attachments) message to all applications
 
 	Quite useful for notification for things like server shutdown, system
 	color changes, etc.
@@ -726,6 +725,20 @@ Desktop::BroadcastToAllApps(int32 code)
 }
 
 
+/*!	\brief Send a quick (no attachments) message to all windows.
+*/
+void
+Desktop::BroadcastToAllWindows(int32 code)
+{
+	AutoWriteLocker _(fWindowLock);
+
+	for (Window* window = fAllWindows.FirstWindow(); window != NULL;
+			window = window->NextWindow(kAllWindowList)) {
+		window->ServerWindow()->PostMessage(code);
+	}
+}
+
+
 // #pragma mark -
 
 
@@ -1967,22 +1980,12 @@ Desktop::ResizeWindowBy(Window* window, float x, float y)
 bool
 Desktop::SetWindowTabLocation(Window* window, float location)
 {
-	if (!LockAllWindows())
+	AutoWriteLocker _(fWindowLock);
-		return false;
 
 	BRegion dirty;
 	bool changed = window->SetTabLocation(location, dirty);
-
+	if (changed)
-	if (changed && window->IsVisible() && dirty.CountRects() > 0) {
+		_RebuildAndRedrawAfterWindowChange(window, dirty);
-		BRegion stillAvailableOnScreen;
-		_RebuildClippingForAllWindows(stillAvailableOnScreen);
-		_SetBackground(stillAvailableOnScreen);
-
-		_WindowChanged(window);
-		_TriggerWindowRedrawing(dirty);
-	}
-
-	UnlockAllWindows();
 
 	return changed;
 }
@@ -1991,23 +1994,12 @@ Desktop::SetWindowTabLocation(Window* window, float location)
 bool
 Desktop::SetWindowDecoratorSettings(Window* window, const BMessage& settings)
 {
-	// TODO: almost exact code duplication to above function...
+	AutoWriteLocker _(fWindowLock);
-
-	if (!LockAllWindows())
-		return false;
 
 	BRegion dirty;
 	bool changed = window->SetDecoratorSettings(settings, dirty);
-
+	if (changed)
-	if (changed && window->IsVisible() && dirty.CountRects() > 0) {
+		_RebuildAndRedrawAfterWindowChange(window, dirty);
-		BRegion stillAvailableOnScreen;
-		_RebuildClippingForAllWindows(stillAvailableOnScreen);
-		_SetBackground(stillAvailableOnScreen);
-
-		_TriggerWindowRedrawing(dirty);
-	}
-
-	UnlockAllWindows();
 
 	return changed;
 }
@@ -2211,32 +2203,36 @@ Desktop::RemoveWindowFromSubset(Window* subset, Window* window)
 
 
 void
-Desktop::SetWindowLook(Window *window, window_look newLook)
+Desktop::FontsChanged(Window* window)
+{
+	AutoWriteLocker _(fWindowLock);
+
+	BRegion dirty;
+	window->FontsChanged(&dirty);
+
+	_RebuildAndRedrawAfterWindowChange(window, dirty);
+}
+
+
+void
+Desktop::SetWindowLook(Window* window, window_look newLook)
 {
 	if (window->Look() == newLook)
 		return;
 
-	if (!LockAllWindows())
+	AutoWriteLocker _(fWindowLock);
-		return;
 
 	BRegion dirty;
 	window->SetLook(newLook, &dirty);
 		// TODO: test what happens when the window
 		// finds out it needs to resize itself...
 
-	BRegion stillAvailableOnScreen;
+	_RebuildAndRedrawAfterWindowChange(window, dirty);
-	_RebuildClippingForAllWindows(stillAvailableOnScreen);
-	_SetBackground(stillAvailableOnScreen);
-	_WindowChanged(window);
-
-	_TriggerWindowRedrawing(dirty);
-
-	UnlockAllWindows();
 }
 
 
 void
-Desktop::SetWindowFeel(Window *window, window_feel newFeel)
+Desktop::SetWindowFeel(Window* window, window_feel newFeel)
 {
 	if (window->Feel() == newFeel)
 		return;
@@ -2340,43 +2336,26 @@ Desktop::SetWindowFlags(Window *window, uint32 newFlags)
 	if (window->Flags() == newFlags)
 		return;
 
-	if (!LockAllWindows())
+	AutoWriteLocker _(fWindowLock);
-		return;
 
 	BRegion dirty;
 	window->SetFlags(newFlags, &dirty);
 		// TODO: test what happens when the window
 		// finds out it needs to resize itself...
 
-	BRegion stillAvailableOnScreen;
+	_RebuildAndRedrawAfterWindowChange(window, dirty);
-	_RebuildClippingForAllWindows(stillAvailableOnScreen);
-	_SetBackground(stillAvailableOnScreen);
-	_WindowChanged(window);
-
-	_TriggerWindowRedrawing(dirty);
-
-	UnlockAllWindows();
 }
 
 
 void
 Desktop::SetWindowTitle(Window *window, const char* title)
 {
-	if (!LockAllWindows())
+	AutoWriteLocker _(fWindowLock);
-		return;
 
 	BRegion dirty;
 	window->SetTitle(title, dirty);
 
-	if (window->IsVisible() && dirty.CountRects() > 0) {
+	_RebuildAndRedrawAfterWindowChange(window, dirty);
-		BRegion stillAvailableOnScreen;
-		_RebuildClippingForAllWindows(stillAvailableOnScreen);
-		_SetBackground(stillAvailableOnScreen);
-
-		_TriggerWindowRedrawing(dirty);
-	}
-
-	UnlockAllWindows();
 }
 
 
@@ -2755,3 +2734,20 @@ Desktop::_SetBackground(BRegion& background)
 		}
 	}
 }
+
+
+//!	The all window lock must be held when calling this function.
+void
+Desktop::_RebuildAndRedrawAfterWindowChange(Window* window, BRegion& dirty)
+{
+	if (!window->IsVisible() || dirty.CountRects() == 0)
+		return;
+
+	BRegion stillAvailableOnScreen;
+	_RebuildClippingForAllWindows(stillAvailableOnScreen);
+	_SetBackground(stillAvailableOnScreen);
+	_WindowChanged(window);
+
+	_TriggerWindowRedrawing(dirty);
+}
+

src/servers/app/Desktop.h

@@ -69,6 +69,7 @@ class Desktop : public MessageLooper, public ScreenOwner {
 		::EventDispatcher&		EventDispatcher() { return fEventDispatcher; }
 
 		void					BroadcastToAllApps(int32 code);
+		void					BroadcastToAllWindows(int32 code);
 
 		// Screen and drawing related methods
 
@@ -142,6 +143,8 @@ class Desktop : public MessageLooper, public ScreenOwner {
 		void					RemoveWindowFromSubset(Window* subset,
 									Window* window);
 
+		void					FontsChanged(Window* window);
+
 		void					SetWindowLook(Window* window, window_look look);
 		void					SetWindowFeel(Window* window, window_feel feel);
 		void					SetWindowFlags(Window* window, uint32 flags);
@@ -240,6 +243,8 @@ class Desktop : public MessageLooper, public ScreenOwner {
 		void					_TriggerWindowRedrawing(
 									BRegion& newDirtyRegion);
 		void					_SetBackground(BRegion& background);
+		void					_RebuildAndRedrawAfterWindowChange(
+									Window* window, BRegion& dirty);
 
 		void					_UpdateFloating(int32 previousWorkspace = -1,
 									int32 nextWorkspace = -1,

src/servers/app/DesktopSettings.cpp

@@ -778,6 +778,7 @@ void
 LockedDesktopSettings::SetDefaultBoldFont(const ServerFont &font)
 {
 	fSettings->SetDefaultBoldFont(font);
+	fDesktop->BroadcastToAllWindows(AS_SYSTEM_FONT_CHANGED);
 }
 
 

src/servers/app/ServerWindow.cpp

@@ -1082,6 +1082,13 @@ ServerWindow::_DispatchMessage(int32 code, BPrivate::LinkReceiver &link)
 			break;
 		}
 
+		case AS_SYSTEM_FONT_CHANGED:
+		{
+			fDesktop->FontsChanged(fWindow);
+			// TODO: tell client about this, too, and relayout...
+			break;
+		}
+
 		case AS_REDRAW:
 			// Nothing to do here - the redraws are actually handled by looking
 			// at the fRedrawRequested member variable in _MessageLooper().
@@ -3692,6 +3699,7 @@ ServerWindow::_MessageNeedsAllWindowsLocked(uint32 code) const
 		case AS_WINDOW_MOVE:
 		case AS_WINDOW_RESIZE:
 		case AS_SET_SIZE_LIMITS:
+		case AS_SYSTEM_FONT_CHANGED:
 		case AS_SET_DECORATOR_SETTINGS:
 		case AS_GET_MOUSE:
 		case AS_DIRECT_WINDOW_SET_FULLSCREEN:

src/servers/app/Window.cpp

@@ -1287,6 +1287,17 @@ Window::GetDecoratorSettings(BMessage* settings)
 }
 
 
+void
+Window::FontsChanged(BRegion* updateRegion)
+{
+	if (fDecorator != NULL) {
+		DesktopSettings settings(fDesktop);
+		fDecorator->FontsChanged(settings, updateRegion);
+		fBorderRegionValid = false;
+	}
+}
+
+
 void
 Window::SetLook(window_look look, BRegion* updateRegion)
 {

src/servers/app/Window.h

@@ -177,6 +177,8 @@ public:
 
 			void				HighlightDecorator(bool active);
 
+			void				FontsChanged(BRegion* updateRegion);
+
 			void				SetLook(window_look look, BRegion* updateRegion);
 			void				SetFeel(window_feel feel);
 			void				SetFlags(uint32 flags, BRegion* updateRegion);