michael@0: /*
michael@0:  * Copyright 2006 The Android Open Source Project
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkWidget_DEFINED
michael@0: #define SkWidget_DEFINED
michael@0: 
michael@0: #include "SkBitmap.h"
michael@0: #include "SkDOM.h"
michael@0: #include "SkPaint.h"
michael@0: #include "SkString.h"
michael@0: #include "SkTDArray.h"
michael@0: #include "SkTextBox.h"
michael@0: #include "SkView.h"
michael@0: 
michael@0: class SkEvent;
michael@0: class SkInterpolator;
michael@0: class SkShader;
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkWidget : public SkView {
michael@0: public:
michael@0:     SkWidget(uint32_t flags = 0) : SkView(flags | kFocusable_Mask | kEnabled_Mask) {}
michael@0: 
michael@0:     /** Call this to post the widget's event to its listeners */
michael@0:     void    postWidgetEvent();
michael@0: 
michael@0:     static void Init();
michael@0:     static void Term();
michael@0: protected:
michael@0:     // override to add slots to an event before posting
michael@0:     virtual void prepareWidgetEvent(SkEvent*);
michael@0:     virtual void onEnabledChange();
michael@0: 
michael@0:     // <event ...> to initialize the event from XML
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node* node);
michael@0: 
michael@0: private:
michael@0:     SkEvent fEvent;
michael@0:     typedef SkView INHERITED;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkHasLabelWidget : public SkWidget {
michael@0: public:
michael@0:     SkHasLabelWidget(uint32_t flags = 0) : SkWidget(flags) {}
michael@0: 
michael@0:     size_t  getLabel(SkString* label = NULL) const;
michael@0:     size_t  getLabel(char lable[] = NULL) const;
michael@0:     void    setLabel(const SkString&);
michael@0:     void    setLabel(const char label[]);
michael@0:     void    setLabel(const char label[], size_t len);
michael@0: 
michael@0: protected:
michael@0:     // called when the label changes
michael@0:     virtual void onLabelChange();
michael@0: 
michael@0:     // overrides
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node*);
michael@0: 
michael@0: private:
michael@0:     SkString    fLabel;
michael@0:     typedef SkWidget INHERITED;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkButtonWidget : public SkHasLabelWidget {
michael@0: public:
michael@0:     SkButtonWidget(uint32_t flags = 0) : SkHasLabelWidget(flags), fState(kOff_State) {}
michael@0: 
michael@0:     enum State {
michael@0:         kOff_State,     //!< XML: buttonState="off"
michael@0:         kOn_State,      //!< XML: buttonState="on"
michael@0:         kUnknown_State  //!< XML: buttonState="unknown"
michael@0:     };
michael@0:     State   getButtonState() const { return fState; }
michael@0:     void    setButtonState(State);
michael@0: 
michael@0: protected:
michael@0:     /** called when the label changes. default behavior is to inval the widget */
michael@0:     virtual void onButtonStateChange();
michael@0: 
michael@0:     // overrides
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node*);
michael@0: 
michael@0: private:
michael@0:     State   fState;
michael@0:     typedef SkHasLabelWidget INHERITED;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkPushButtonWidget : public SkButtonWidget {
michael@0: public:
michael@0:     SkPushButtonWidget(uint32_t flags = 0) : SkButtonWidget(flags) {}
michael@0: 
michael@0: protected:
michael@0:     virtual bool onEvent(const SkEvent&);
michael@0:     virtual void onDraw(SkCanvas*);
michael@0:     virtual Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) SK_OVERRIDE;
michael@0:     virtual bool onClick(Click* click);
michael@0: 
michael@0: private:
michael@0:     typedef SkButtonWidget INHERITED;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkCheckBoxWidget : public SkButtonWidget {
michael@0: public:
michael@0:     SkCheckBoxWidget(uint32_t flags = 0);
michael@0: 
michael@0: protected:
michael@0:     virtual bool onEvent(const SkEvent&);
michael@0:     virtual void onDraw(SkCanvas*);
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node*);
michael@0: 
michael@0: private:
michael@0:     typedef SkButtonWidget INHERITED;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkStaticTextView : public SkView {
michael@0: public:
michael@0:             SkStaticTextView(uint32_t flags = 0);
michael@0:     virtual ~SkStaticTextView();
michael@0: 
michael@0:     enum Mode {
michael@0:         kFixedSize_Mode,
michael@0:         kAutoWidth_Mode,
michael@0:         kAutoHeight_Mode,
michael@0: 
michael@0:         kModeCount
michael@0:     };
michael@0:     Mode    getMode() const { return (Mode)fMode; }
michael@0:     void    setMode(Mode);
michael@0: 
michael@0:     SkTextBox::SpacingAlign getSpacingAlign() const { return (SkTextBox::SpacingAlign)fSpacingAlign; }
michael@0:     void    setSpacingAlign(SkTextBox::SpacingAlign);
michael@0: 
michael@0:     void    getMargin(SkPoint* margin) const;
michael@0:     void    setMargin(SkScalar dx, SkScalar dy);
michael@0: 
michael@0:     size_t  getText(SkString* text = NULL) const;
michael@0:     size_t  getText(char text[] = NULL) const;
michael@0:     void    setText(const SkString&);
michael@0:     void    setText(const char text[]);
michael@0:     void    setText(const char text[], size_t len);
michael@0: 
michael@0:     void    getPaint(SkPaint*) const;
michael@0:     void    setPaint(const SkPaint&);
michael@0: 
michael@0: protected:
michael@0:     // overrides
michael@0:     virtual void onDraw(SkCanvas*);
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node*);
michael@0: 
michael@0: private:
michael@0:     SkPoint     fMargin;
michael@0:     SkString    fText;
michael@0:     SkPaint     fPaint;
michael@0:     uint8_t     fMode;
michael@0:     uint8_t     fSpacingAlign;
michael@0: 
michael@0:     void computeSize();
michael@0: 
michael@0:     typedef SkView INHERITED;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkBitmapView : public SkView {
michael@0: public:
michael@0:             SkBitmapView(uint32_t flags = 0);
michael@0:     virtual ~SkBitmapView();
michael@0: 
michael@0:     bool    getBitmap(SkBitmap*) const;
michael@0:     void    setBitmap(const SkBitmap*, bool viewOwnsPixels);
michael@0:     bool    loadBitmapFromFile(const char path[]);
michael@0: 
michael@0: protected:
michael@0:     virtual void onDraw(SkCanvas*);
michael@0:     virtual void onInflate(const SkDOM&, const SkDOM::Node*);
michael@0: 
michael@0: private:
michael@0:     SkBitmap    fBitmap;
michael@0:     typedef SkView INHERITED;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkHasLabelView : public SkView {
michael@0: public:
michael@0:     void    getLabel(SkString*) const;
michael@0:     void    setLabel(const SkString&);
michael@0:     void    setLabel(const char label[]);
michael@0: 
michael@0: protected:
michael@0:     SkString    fLabel;
michael@0: 
michael@0:     // called when the label changes
michael@0:     virtual void onLabelChange();
michael@0: 
michael@0:     // overrides
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node*);
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkPushButtonView : public SkHasLabelView {
michael@0: public:
michael@0:     SkPushButtonView(uint32_t flags = 0);
michael@0: 
michael@0: protected:
michael@0:     virtual void onDraw(SkCanvas*);
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node*);
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkCheckBoxView : public SkHasLabelView {
michael@0: public:
michael@0:     SkCheckBoxView(uint32_t flags = 0);
michael@0: 
michael@0:     enum State {
michael@0:         kOff_State,
michael@0:         kOn_State,
michael@0:         kMaybe_State
michael@0:     };
michael@0:     State   getState() const { return fState; }
michael@0:     void    setState(State);
michael@0: 
michael@0: protected:
michael@0:     virtual void onDraw(SkCanvas*);
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node*);
michael@0: 
michael@0: private:
michael@0:     State   fState;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkProgressView : public SkView {
michael@0: public:
michael@0:     SkProgressView(uint32_t flags = 0);
michael@0:     virtual ~SkProgressView();
michael@0: 
michael@0:     uint16_t    getValue() const { return fValue; }
michael@0:     uint16_t    getMax() const { return fMax; }
michael@0: 
michael@0:     void    setMax(U16CPU max);
michael@0:     void    setValue(U16CPU value);
michael@0: 
michael@0: protected:
michael@0:     virtual void onDraw(SkCanvas*);
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node* node);
michael@0: 
michael@0: private:
michael@0:     uint16_t    fValue, fMax;
michael@0:     SkShader*   fOnShader, *fOffShader;
michael@0:     SkInterpolator* fInterp;
michael@0:     bool fDoInterp;
michael@0: 
michael@0:     typedef SkView INHERITED;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkListSource : public SkEventSink {
michael@0: public:
michael@0:     virtual int countRows() = 0;
michael@0:     virtual void getRow(int index, SkString* left, SkString* right) = 0;
michael@0:     virtual SkEvent* getEvent(int index);
michael@0: 
michael@0:     static SkListSource* CreateFromDir(const char path[], const char suffix[],
michael@0:                                         const char targetPrefix[]);
michael@0:     static SkListSource* CreateFromDOM(const SkDOM& dom, const SkDOM::Node* node);
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkListView : public SkView {
michael@0: public:
michael@0:             SkListView(uint32_t flags = 0);
michael@0:     virtual ~SkListView();
michael@0: 
michael@0:     SkScalar    getRowHeight() const { return fRowHeight; }
michael@0:     void        setRowHeight(SkScalar);
michael@0: 
michael@0:     /** Return the index of the selected row, or -1 if none
michael@0:     */
michael@0:     int     getSelection() const { return fCurrIndex; }
michael@0:     /** Set the index of the selected row, or -1 for none
michael@0:     */
michael@0:     void    setSelection(int);
michael@0: 
michael@0:     void    moveSelectionUp();
michael@0:     void    moveSelectionDown();
michael@0: 
michael@0:     enum Attr {
michael@0:         kBG_Attr,
michael@0:         kNormalText_Attr,
michael@0:         kHiliteText_Attr,
michael@0:         kHiliteCell_Attr,
michael@0:         kAttrCount
michael@0:     };
michael@0:     SkPaint&    paint(Attr);
michael@0: 
michael@0:     SkListSource*   getListSource() const { return fSource; }
michael@0:     SkListSource*   setListSource(SkListSource*);
michael@0: 
michael@0: #if 0
michael@0:     enum Action {
michael@0:         kSelectionChange_Action,
michael@0:         kSelectionPicked_Action,
michael@0:         kActionCount
michael@0:     };
michael@0:     /** If event is not null, it is retained by the view, and a copy
michael@0:         of the event will be posted to its listeners when the specified
michael@0:         action occurs. If event is null, then no event will be posted for
michael@0:         the specified action.
michael@0:     */
michael@0:     void    setActionEvent(Action, SkEvent* event);
michael@0: #endif
michael@0: 
michael@0: protected:
michael@0:     virtual void onDraw(SkCanvas*);
michael@0:     virtual void onSizeChange();
michael@0:     virtual bool onEvent(const SkEvent&);
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node* node);
michael@0: 
michael@0: private:
michael@0:     SkPaint         fPaint[kAttrCount];
michael@0:     SkListSource*   fSource;
michael@0:     SkScalar        fRowHeight;
michael@0:     int             fCurrIndex;     // logical index
michael@0:     int             fScrollIndex;   // logical index of top-most visible row
michael@0:     int             fVisibleRowCount;
michael@0:     SkString*       fStrCache;
michael@0: 
michael@0:     void    dirtyStrCache();
michael@0:     void    ensureStrCache(int visibleCount);
michael@0: 
michael@0:     int     logicalToVisualIndex(int index) const { return index - fScrollIndex; }
michael@0:     void    invalSelection();
michael@0:     bool    getRowRect(int index, SkRect*) const;
michael@0:     void    ensureSelectionIsVisible();
michael@0: 
michael@0:     typedef SkView INHERITED;
michael@0: };
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: class SkGridView : public SkView {
michael@0: public:
michael@0:             SkGridView(uint32_t flags = 0);
michael@0:     virtual ~SkGridView();
michael@0: 
michael@0:     void    getCellSize(SkPoint*) const;
michael@0:     void    setCellSize(SkScalar x, SkScalar y);
michael@0: 
michael@0:     /** Return the index of the selected item, or -1 if none
michael@0:     */
michael@0:     int     getSelection() const { return fCurrIndex; }
michael@0:     /** Set the index of the selected row, or -1 for none
michael@0:     */
michael@0:     void    setSelection(int);
michael@0: 
michael@0:     void    moveSelectionUp();
michael@0:     void    moveSelectionDown();
michael@0: 
michael@0:     enum Attr {
michael@0:         kBG_Attr,
michael@0:         kHiliteCell_Attr,
michael@0:         kAttrCount
michael@0:     };
michael@0:     SkPaint&    paint(Attr);
michael@0: 
michael@0:     SkListSource*   getListSource() const { return fSource; }
michael@0:     SkListSource*   setListSource(SkListSource*);
michael@0: 
michael@0: protected:
michael@0:     virtual void onDraw(SkCanvas*);
michael@0:     virtual void onSizeChange();
michael@0:     virtual bool onEvent(const SkEvent&);
michael@0:     virtual void onInflate(const SkDOM& dom, const SkDOM::Node* node);
michael@0: 
michael@0: private:
michael@0:     SkView*         fScrollBar;
michael@0:     SkPaint         fPaint[kAttrCount];
michael@0:     SkListSource*   fSource;
michael@0:     int             fCurrIndex;     // logical index
michael@0: 
michael@0:     SkPoint         fCellSize;
michael@0:     SkIPoint        fVisibleCount;
michael@0: 
michael@0:     int     logicalToVisualIndex(int index) const { return index; }
michael@0:     void    invalSelection();
michael@0:     bool    getCellRect(int index, SkRect*) const;
michael@0:     void    ensureSelectionIsVisible();
michael@0: 
michael@0:     typedef SkView INHERITED;
michael@0: };
michael@0: 
michael@0: #endif