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