Home | History | Annotate | Download | only in gtk
      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