Talk:New Theme Engine

From SkyOS

Contents 1 Alex Forster 2 Robert 3 Alex Forster 4 Robert

Alex Forster

This theme engine is very interesting. What inspired you to get this object-oriented? Can you post the code to the example with all the images being used?

Robert

Which code do you mean? To make a theme like WindUI you just need the Settings File and the images. No need to write any code.

Alex Forster

Oh, that clears some things up. Is any of it accessible from an API to theme on a per-widget basis? Or could there be a manifest-esque file that a developer could put in the same place as their .app and theme only their program?

Robert

Theoretically every app can use its own theme by setting the THEME environment variable in a static constructor. Regarding the interface:

enum ThemeWindowType
{
  THEME_WINDOW_TYPE_BUTTON,
  THEME_WINDOW_TYPE_TITLEWINDOW,
};
enum ThemeProperty
{
  THEME_PROPERTY_TITLE_HEIGHT,
  THEME_PROPERTY_BUTTON_HEIGHT,
  THEME_PROPERTY_SCROLLBAR_WIDTH,
  THEME_PROPERTY_SCROLLBAR_HEIGHT,
  THEME_PROPERTY_SCROLLBAR_BUTTON_WIDTH,
  THEME_PROPERTY_SCROLLBAR_BUTTON_HEIGHT,
  THEME_PROPERTY_SCROLLBAR_INDICATOR_MIN_SIZE,
  THEME_PROPERTY_POPUP_OPEN_ON_MOVE,
  THEME_PROPERTY_MENU_BAR_HEIGHT,
  THEME_PROPERTY_STATUS_BAR_HEIGHT,
  THEME_PROPERTY_LISTVIEW_HEADER_HEIGHT,
  THEME_PROPERTY_PROGRESSBAR_HEIGHT,
  THEME_PROPERTY_DESKTOP_ICON_TEXT_COLOR,
  THEME_PROPERTY_DESKTOP_ICON_BACK_COLOR,
  THEME_PROPERTY_DESKTOP_ICON_TEXT_COLOR_SELECTED,
  THEME_PROPERTY_DESKTOP_ICON_BACK_COLOR_SELECTED,
  THEME_PROPERTY_FRAME_COLOR,
  THEME_PROPERTY_TREE_IMAGE_EXPANDED,
  THEME_PROPERTY_TREE_IMAGE_COLLAPSED,
  THEME_PROPERTY_TAB_HEIGHT,
  THEME_PROPERTY_TAB_VIEW_BORDER,
  THEME_PROPERTY_PROGRESS_BRUSH,
  THEME_PROPERTY_PROGRESS_BORDER,
  THEME_PROPERTY_GROUP_VIEW_BORDER,
  THEME_PROPERTY_CLIENT_BACKGROUND_COLOR,
  THEME_PROPERTY_DONT_DRAW_FRAME_BORDER_WITH_BACKGROUND,
  THEME_PROPERTY_STATUS_BAR_ACTS_AS_FRAME,
  THEME_PROPERTY_TAB_VIEW_HEADER_SIZE,
  THEME_PROPERTY_APPLICATION_WINDOW_MIN_SIZE_WIDTH,
  THEME_PROPERTY_APPLICATION_WINDOW_MIN_SIZE_HEIGHT,
  THEME_PROPERTY_APPLICATION_WINDOW_DEFAULT_COLOR,
  THEME_PROPERTY_APPLICATION_WINDOW_DEFAULT_BACKGROUND_COLOR
};
enum ThemeImage
{
  THEME_IMAGE_MENU_CHILD_ARROW = 0,
  THEME_IMAGE_RADIO_BUTTON_OFF,
  THEME_IMAGE_RADIO_BUTTON_ON,
};
class Theme : public Object
{
public:
  Theme();
  virtual ~Theme();
  virtual void				DrawTitle(TitleWindow *pWindow)=0;
  virtual void				DrawButtonBackground(Button *pWindow)=0;
  virtual void				DrawFrameBackground(Window *pWindow, const Rect& rRect)=0;
  virtual void				DrawControlBackground(Painter *m_pPainter, const Rect& rRect)=0;
  virtual void				DrawEditWindow(Window *pWindow, const Rect& rRect)=0;
  virtual void				DrawInnerFrame(ApplicationWindow *pWindow, int iTopGap = 0, int iBottomGap = 0)=0;	
  virtual void				DrawOuterFrame(ApplicationWindow *pWindow)=0;	
  virtual int					GetProperty(ThemeProperty nProperty)=0;
  virtual int					GetFrameWidth(FrameWidthPosition nPos)=0;
  virtual int					GetInnerWindowMargin(InnerWindowMargin nPos)=0;
  virtual void				ApplyWindowShape(ApplicationWindow *pWindow)=0;
  virtual void				TitleWindowFlagsChanged(TitleWindow *pWindow)=0;
  virtual TitleWindowAction	TitleWindowMouseEvent(TitleWindow *pWindow, const InputEvent& nInputEvent)=0;
  virtual Point				TitleGetPreferredSize(TitleWindow *pWindow)=0;
  virtual void				WindowCreated(Window *pWindow, ThemeWindowType nThemeWindowType)=0;
  virtual void				DrawScrollBar(ScrollBar *pWindow, const Rect& rDirty)=0;
  virtual void				DrawScrollBarIndicator(ScrollBar *pWindow, const Rect& rDirty)=0;
  virtual Image*				GetImage(int iID)=0;
  virtual void				DrawStatusBar(Window *pWindow, const Rect& rDirty)=0;
  virtual void				DrawCheckBox(CheckBox *pWindow, const Rect& rDirty)=0;
  virtual Point				CheckBoxGetPreferredSize(CheckBox *pWindow)=0;
  virtual void				DrawListView(Window *pWindow, const Rect& rDirty)=0;
  virtual void				DrawListViewHeader(ListViewHeader *pListViewHeader, const Rect& rRect, int iColumnIndex, ListViewColumn *pColumn)=0;
  virtual void				DrawProgressBar(ProgressBar *pWindow, const Rect& rDirty)=0;
  virtual void				DrawSplitterGrip(SplitterSeperator *pSplitter)=0;
  virtual void				DrawTab(TabView *pWindow, TabViewEntry *pEntry, bool bFirst, bool bLast)=0;
  virtual void				DrawTabView(TabView *pWindow)=0;
  virtual bool		GetAlign(const String& cKey, const String& cSuffix, int& iAlign, int iDefaultAlign)=0;
  virtual bool		Get(const String& cKey, const String& cSuffix, Image** ppImage, int iIndex)=0;
  virtual bool		Get(const String& cKey, const String& cSuffix, Font** pFont, SystemFont nDefaultFont = DEFAULT_FONT_NORMAL, int iDefaultSize = 8)=0;
  virtual bool		Get(const String& cKey, const String& cSuffix, Variant& pVariant, int iIndex = 0)=0;
  virtual bool		Get(const String& cKey, const String& cSuffix, String& cString, int iIndex = 0)=0;
  virtual bool		Get(const String& cKey, const String& cSuffix, int& iValue, int iIndex = 0)=0;
  virtual bool		Get(const String& cKey, const String& cSuffix, long long& llValue, int iIndex = 0)=0;
  virtual bool		Get(const String& cKey, const String& cSuffix, bool& bBool, int iIndex = 0)=0;
  virtual bool		Get(const String& cKey, const String& cSuffix, Color& nColor, int iIndex = 0)=0 ;
  virtual void		Get(const String& szKey, const String& szSuffix, BrushAssembly& pBrush, int iIndex = 0)=0; 
private:
};