1 /* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef ScrollbarThemeGtk_h 27 #define ScrollbarThemeGtk_h 28 29 #include "ScrollbarThemeComposite.h" 30 31 namespace WebCore { 32 33 class Scrollbar; 34 35 class ScrollbarThemeGtk : public ScrollbarThemeComposite { 36 public: 37 ScrollbarThemeGtk(); 38 virtual ~ScrollbarThemeGtk(); 39 40 virtual bool hasButtons(Scrollbar*) { return true; } 41 virtual bool hasThumb(Scrollbar*); 42 virtual IntRect backButtonRect(Scrollbar*, ScrollbarPart, bool); 43 virtual IntRect forwardButtonRect(Scrollbar*, ScrollbarPart, bool); 44 virtual IntRect trackRect(Scrollbar*, bool); 45 IntRect thumbRect(Scrollbar*, const IntRect& unconstrainedTrackRect); 46 bool paint(Scrollbar*, GraphicsContext*, const IntRect& damageRect); 47 void paintScrollbarBackground(GraphicsContext*, Scrollbar*); 48 void paintTrackBackground(GraphicsContext*, Scrollbar*, const IntRect&); 49 void paintThumb(GraphicsContext*, Scrollbar*, const IntRect&); 50 virtual void paintButton(GraphicsContext*, Scrollbar*, const IntRect&, ScrollbarPart); 51 virtual void paintScrollCorner(ScrollView*, GraphicsContext*, const IntRect&); 52 virtual bool shouldCenterOnThumb(Scrollbar*, const PlatformMouseEvent&); 53 virtual int scrollbarThickness(ScrollbarControlSize); 54 virtual IntSize buttonSize(Scrollbar*); 55 virtual int minimumThumbLength(Scrollbar*); 56 57 // TODO: These are the default GTK+ values. At some point we should pull these from the theme itself. 58 virtual double initialAutoscrollTimerDelay() { return 0.20; } 59 virtual double autoscrollTimerDelay() { return 0.02; } 60 void updateThemeProperties(); 61 void updateScrollbarsFrameThickness(); 62 void registerScrollbar(Scrollbar*); 63 void unregisterScrollbar(Scrollbar*); 64 65 protected: 66 #ifndef GTK_API_VERSION_2 67 GtkStyleContext* m_context; 68 #endif 69 int m_thumbFatness; 70 int m_troughBorderWidth; 71 int m_stepperSize; 72 int m_stepperSpacing; 73 int m_minThumbLength; 74 gboolean m_troughUnderSteppers; 75 gboolean m_hasForwardButtonStartPart; 76 gboolean m_hasBackButtonEndPart; 77 }; 78 79 } 80 #endif 81
