diff options
Diffstat (limited to 'include/views/SkWidget.h')
| -rw-r--r-- | include/views/SkWidget.h | 476 |
1 files changed, 476 insertions, 0 deletions
diff --git a/include/views/SkWidget.h b/include/views/SkWidget.h new file mode 100644 index 0000000..db85f01 --- /dev/null +++ b/include/views/SkWidget.h @@ -0,0 +1,476 @@ +/* + * Copyright (C) 2006 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef SkWidget_DEFINED +#define SkWidget_DEFINED + +#include "SkView.h" +#include "SkBitmap.h" +#include "SkDOM.h" +#include "SkPaint.h" +#include "SkString.h" +#include "SkTDArray.h" + +////////////////////////////////////////////////////////////////////////////// + +class SkWidget : public SkView { +public: + SkWidget(uint32_t flags = 0) : SkView(flags | kFocusable_Mask | kEnabled_Mask) {} + + /** Call this to post the widget's event to its listeners */ + void postWidgetEvent(); + + static void Init(); + static void Term(); +protected: + // override to add slots to an event before posting + virtual void prepareWidgetEvent(SkEvent*); + virtual void onEnabledChange(); + + // <event ...> to initialize the event from XML + virtual void onInflate(const SkDOM& dom, const SkDOM::Node* node); + +private: + SkEvent fEvent; + typedef SkView INHERITED; +}; + +class SkHasLabelWidget : public SkWidget { +public: + SkHasLabelWidget(uint32_t flags = 0) : SkWidget(flags) {} + + size_t getLabel(SkString* label = NULL) const; + size_t getLabel(char lable[] = NULL) const; + void setLabel(const SkString&); + void setLabel(const char label[]); + void setLabel(const char label[], size_t len); + +protected: + // called when the label changes + virtual void onLabelChange(); + + // overrides + virtual void onInflate(const SkDOM& dom, const SkDOM::Node*); + +private: + SkString fLabel; + typedef SkWidget INHERITED; +}; + +class SkButtonWidget : public SkHasLabelWidget { +public: + SkButtonWidget(uint32_t flags = 0) : SkHasLabelWidget(flags), fState(kOff_State) {} + + enum State { + kOff_State, //!< XML: buttonState="off" + kOn_State, //!< XML: buttonState="on" + kUnknown_State //!< XML: buttonState="unknown" + }; + State getButtonState() const { return fState; } + void setButtonState(State); + +protected: + /** called when the label changes. default behavior is to inval the widget */ + virtual void onButtonStateChange(); + + // overrides + virtual void onInflate(const SkDOM& dom, const SkDOM::Node*); + +private: + State fState; + typedef SkHasLabelWidget INHERITED; +}; + +class SkPushButtonWidget : public SkButtonWidget { +public: + SkPushButtonWidget(uint32_t flags = 0) : SkButtonWidget(flags) {} + +protected: + virtual bool onEvent(const SkEvent&); + virtual void onDraw(SkCanvas*); + virtual Click* onFindClickHandler(SkScalar x, SkScalar y); + virtual bool onClick(Click* click); + +private: + typedef SkButtonWidget INHERITED; +}; + +class SkCheckBoxWidget : public SkButtonWidget { +public: + SkCheckBoxWidget(uint32_t flags = 0); + +protected: + virtual bool onEvent(const SkEvent&); + virtual void onDraw(SkCanvas*); + virtual void onInflate(const SkDOM& dom, const SkDOM::Node*); + +private: + typedef SkButtonWidget INHERITED; +}; + +#include "SkTextBox.h" + +class SkStaticTextView : public SkView { +public: + SkStaticTextView(uint32_t flags = 0); + virtual ~SkStaticTextView(); + + enum Mode { + kFixedSize_Mode, + kAutoWidth_Mode, + kAutoHeight_Mode, + + kModeCount + }; + Mode getMode() const { return (Mode)fMode; } + void setMode(Mode); + + SkTextBox::SpacingAlign getSpacingAlign() const { return (SkTextBox::SpacingAlign)fSpacingAlign; } + void setSpacingAlign(SkTextBox::SpacingAlign); + + void getMargin(SkPoint* margin) const; + void setMargin(SkScalar dx, SkScalar dy); + + size_t getText(SkString* text = NULL) const; + size_t getText(char text[] = NULL) const; + void setText(const SkString&); + void setText(const char text[]); + void setText(const char text[], size_t len); + + void getPaint(SkPaint*) const; + void setPaint(const SkPaint&); + +protected: + // overrides + virtual void onDraw(SkCanvas*); + virtual void onInflate(const SkDOM& dom, const SkDOM::Node*); + +private: + SkPoint fMargin; + SkString fText; + SkPaint fPaint; + uint8_t fMode; + uint8_t fSpacingAlign; + + void computeSize(); + + typedef SkView INHERITED; +}; + +class SkBitmapView : public SkView { +public: + SkBitmapView(uint32_t flags = 0); + virtual ~SkBitmapView(); + + bool getBitmap(SkBitmap*) const; + void setBitmap(const SkBitmap*, bool viewOwnsPixels); + bool loadBitmapFromFile(const char path[]); + +protected: + virtual void onDraw(SkCanvas*); + virtual void onInflate(const SkDOM&, const SkDOM::Node*); + +private: + SkBitmap fBitmap; + typedef SkView INHERITED; +}; + +///////////////////////////////////////////////////////////////////////////// + +class SkShader; +class SkInterpolator; + +class SkWidgetView : public SkView { +public: + SkWidgetView(uint32_t flags = 0); + virtual ~SkWidgetView(); + + static const char* GetEventType(); +}; + +class SkSliderView : public SkWidgetView { +public: + SkSliderView(uint32_t flags = 0); + + uint16_t getValue() const { return fValue; } + uint16_t getMax() const { return fMax; } + + void setMax(U16CPU max); + void setValue(U16CPU value); + +protected: + virtual void onDraw(SkCanvas*); + virtual Click* onFindClickHandler(SkScalar x, SkScalar y); + virtual bool onClick(Click*); + +private: + uint16_t fValue, fMax; + + typedef SkWidgetView INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +class SkHasLabelView : public SkView { +public: + void getLabel(SkString*) const; + void setLabel(const SkString&); + void setLabel(const char label[]); + +protected: + SkString fLabel; + + // called when the label changes + virtual void onLabelChange(); + + // overrides + virtual void onInflate(const SkDOM& dom, const SkDOM::Node*); +}; + +class SkPushButtonView : public SkHasLabelView { +public: + SkPushButtonView(uint32_t flags = 0); + +protected: + virtual void onDraw(SkCanvas*); + virtual void onInflate(const SkDOM& dom, const SkDOM::Node*); +}; + +class SkCheckBoxView : public SkHasLabelView { +public: + SkCheckBoxView(uint32_t flags = 0); + + enum State { + kOff_State, + kOn_State, + kMaybe_State + }; + State getState() const { return fState; } + void setState(State); + +protected: + virtual void onDraw(SkCanvas*); + virtual void onInflate(const SkDOM& dom, const SkDOM::Node*); + +private: + State fState; +}; + +class SkProgressView : public SkView { +public: + SkProgressView(uint32_t flags = 0); + virtual ~SkProgressView(); + + uint16_t getValue() const { return fValue; } + uint16_t getMax() const { return fMax; } + + void setMax(U16CPU max); + void setValue(U16CPU value); + +protected: + virtual void onDraw(SkCanvas*); + virtual void onInflate(const SkDOM& dom, const SkDOM::Node* node); + +private: + uint16_t fValue, fMax; + SkShader* fOnShader, *fOffShader; + SkInterpolator* fInterp; + bool fDoInterp; + + typedef SkView INHERITED; +}; + +class SkTextView : public SkView { +public: + SkTextView(uint32_t flags = 0); + virtual ~SkTextView(); + + enum AnimaDir { + kNeutral_AnimDir, + kForward_AnimDir, + kBackward_AnimDir, + kAnimDirCount + }; + + void getText(SkString*) const; + void setText(const SkString&, AnimaDir dir = kNeutral_AnimDir); + void setText(const char text[], AnimaDir dir = kNeutral_AnimDir); + void setText(const char text[], size_t len, AnimaDir dir = kNeutral_AnimDir); + + void getMargin(SkPoint* margin) const; + void setMargin(const SkPoint&); + + SkPaint& paint() { return fPaint; } + +protected: + virtual void onDraw(SkCanvas*); + virtual void onInflate(const SkDOM& dom, const SkDOM::Node* node); + +private: + SkString fText; + SkPaint fPaint; + SkPoint fMargin; + + class Interp; + Interp* fInterp; + bool fDoInterp; + // called by the other setText methods. This guy does not check for != + // before doing the assign, so the caller must check for us + void privSetText(const SkString&, AnimaDir dir); + + typedef SkView INHERITED; +}; + +////////////////////////////////////////////////////////// + +class SkEvent; + +class SkListSource : public SkEventSink { +public: + virtual int countRows() = 0; + virtual void getRow(int index, SkString* left, SkString* right) = 0; + virtual SkEvent* getEvent(int index); + + static SkListSource* CreateFromDir(const char path[], const char suffix[], + const char targetPrefix[]); + static SkListSource* CreateFromDOM(const SkDOM& dom, const SkDOM::Node* node); +}; + +class SkListView : public SkWidgetView { +public: + SkListView(uint32_t flags = 0); + virtual ~SkListView(); + + SkScalar getRowHeight() const { return fRowHeight; } + void setRowHeight(SkScalar); + + /** Return the index of the selected row, or -1 if none + */ + int getSelection() const { return fCurrIndex; } + /** Set the index of the selected row, or -1 for none + */ + void setSelection(int); + + void moveSelectionUp(); + void moveSelectionDown(); + + enum Attr { + kBG_Attr, + kNormalText_Attr, + kHiliteText_Attr, + kHiliteCell_Attr, + kAttrCount + }; + SkPaint& paint(Attr); + + SkListSource* getListSource() const { return fSource; } + SkListSource* setListSource(SkListSource*); + +#if 0 + enum Action { + kSelectionChange_Action, + kSelectionPicked_Action, + kActionCount + }; + /** If event is not null, it is retained by the view, and a copy + of the event will be posted to its listeners when the specified + action occurs. If event is null, then no event will be posted for + the specified action. + */ + void setActionEvent(Action, SkEvent* event); +#endif + +protected: + virtual void onDraw(SkCanvas*); + virtual void onSizeChange(); + virtual bool onEvent(const SkEvent&); + virtual void onInflate(const SkDOM& dom, const SkDOM::Node* node); + +private: + SkPaint fPaint[kAttrCount]; + SkListSource* fSource; + SkScalar fRowHeight; + int fCurrIndex; // logical index + int fScrollIndex; // logical index of top-most visible row + int fVisibleRowCount; + SkString* fStrCache; + + void dirtyStrCache(); + void ensureStrCache(int visibleCount); + + int logicalToVisualIndex(int index) const { return index - fScrollIndex; } + void invalSelection(); + bool getRowRect(int index, SkRect*) const; + void ensureSelectionIsVisible(); + + typedef SkWidgetView INHERITED; +}; + +////////////////////////////////////////////////////////// + +class SkGridView : public SkWidgetView { +public: + SkGridView(uint32_t flags = 0); + virtual ~SkGridView(); + + void getCellSize(SkPoint*) const; + void setCellSize(SkScalar x, SkScalar y); + + /** Return the index of the selected item, or -1 if none + */ + int getSelection() const { return fCurrIndex; } + /** Set the index of the selected row, or -1 for none + */ + void setSelection(int); + + void moveSelectionUp(); + void moveSelectionDown(); + + enum Attr { + kBG_Attr, + kHiliteCell_Attr, + kAttrCount + }; + SkPaint& paint(Attr); + + SkListSource* getListSource() const { return fSource; } + SkListSource* setListSource(SkListSource*); + +protected: + virtual void onDraw(SkCanvas*); + virtual void onSizeChange(); + virtual bool onEvent(const SkEvent&); + virtual void onInflate(const SkDOM& dom, const SkDOM::Node* node); + +private: + SkView* fScrollBar; + SkPaint fPaint[kAttrCount]; + SkListSource* fSource; + int fCurrIndex; // logical index + + SkPoint fCellSize; + SkIPoint fVisibleCount; + + int logicalToVisualIndex(int index) const { return index; } + void invalSelection(); + bool getCellRect(int index, SkRect*) const; + void ensureSelectionIsVisible(); + + typedef SkWidgetView INHERITED; +}; + +#endif + |