widget/src/qt/nsNativeThemeQt.h
author Jonathan Kew <jfkthame@gmail.com>
Sat, 20 Nov 2010 17:49:12 +0000
changeset 57948 11ca3cd81864621a74efb90cf15398067f27e891
parent 57445 a0351ac4eb4535310d68c1c49bc57c3e359a90c8
child 68250 faeb9fecfc94ed619fed6758b4dbea1b8ed1fee6
permissions -rw-r--r--
bug 603879 - part 2 - update harfbuzz integration to support arabic etc shaping. r=jdaggett a=blocking2.0

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#include <QStyle>
#include <QPalette>

#include "nsITheme.h"
#include "nsCOMPtr.h"
#include "nsIAtom.h"
#include "nsNativeTheme.h"
#include "nsIDeviceContext.h"

class QComboBox;
class QStyleOptionButton;
class QStyleOptionFrameV2;
class QStyleOptionComboBox;
class QRect;
class nsIFrame;

class nsNativeThemeQt : private nsNativeTheme,
                        public nsITheme
{
public:
  NS_DECL_ISUPPORTS_INHERITED

  // The nsITheme interface.
  NS_IMETHOD DrawWidgetBackground(nsIRenderingContext* aContext,
                                  nsIFrame* aFrame,
                                  PRUint8 aWidgetType,
                                  const nsRect& aRect,
                                  const nsRect& aClipRect);

  NS_IMETHOD GetWidgetBorder(nsIDeviceContext* aContext,
                             nsIFrame* aFrame,
                             PRUint8 aWidgetType,
                             nsIntMargin* aResult);

  NS_IMETHOD GetMinimumWidgetSize(nsIRenderingContext* aContext, nsIFrame* aFrame,
                                  PRUint8 aWidgetType,
                                  nsIntSize* aResult,
                                  PRBool* aIsOverridable);

  NS_IMETHOD WidgetStateChanged(nsIFrame* aFrame, PRUint8 aWidgetType,
                                nsIAtom* aAttribute, PRBool* aShouldRepaint);

  NS_IMETHOD ThemeChanged();

  PRBool ThemeSupportsWidget(nsPresContext* aPresContext,
                             nsIFrame* aFrame,
                             PRUint8 aWidgetType);

  PRBool WidgetIsContainer(PRUint8 aWidgetType);

  virtual NS_HIDDEN_(PRBool) GetWidgetPadding(nsIDeviceContext* aContext,
                                              nsIFrame* aFrame,
                                              PRUint8 aWidgetType,
                                              nsIntMargin* aResult);

  NS_IMETHOD_(PRBool) ThemeDrawsFocusForWidget(nsPresContext* aPresContext,
                                               nsIFrame* aFrame, PRUint8 aWidgetType);

  PRBool ThemeNeedsComboboxDropmarker();

  nsNativeThemeQt();
  virtual ~nsNativeThemeQt();

private:

  inline nsresult DrawWidgetBackground(QPainter *qPainter,
                                       nsIRenderingContext* aContext,
                                       nsIFrame* aFrame,
                                       PRUint8 aWidgetType,
                                       const nsRect& aRect,
                                       const nsRect& aClipRect);

  inline PRInt32 GetAppUnitsPerDevPixel(nsIRenderingContext* aContext){
    nsCOMPtr<nsIDeviceContext> dctx = nsnull;
    aContext->GetDeviceContext(*getter_AddRefs(dctx));
    return dctx->AppUnitsPerDevPixel();
  }

  void InitButtonStyle(PRUint8 widgetType,
                       nsIFrame* aFrame,
                       QRect rect,
                       QStyleOptionButton &opt);

  void InitPlainStyle(PRUint8 aWidgetType,
                      nsIFrame* aFrame,
                      QRect rect,
                      QStyleOption &opt,
                      QStyle::State extraFlags = QStyle::State_None);

  void InitComboStyle(PRUint8 aWidgetType,
                      nsIFrame* aFrame,
                      QRect rect,
                      QStyleOptionComboBox &opt);

private:

  PRInt32 mFrameWidth;

  QPalette mNoBackgroundPalette;
};