michael@0: 
michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
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: #include "SkWidget.h"
michael@0: #include "SkCanvas.h"
michael@0: #include "SkKey.h"
michael@0: #include "SkParsePaint.h"
michael@0: #include "SkSystemEventTypes.h"
michael@0: #include "SkTextBox.h"
michael@0: 
michael@0: #if 0
michael@0: 
michael@0: #ifdef SK_DEBUG
michael@0:     static void assert_no_attr(const SkDOM& dom, const SkDOM::Node* node, const char attr[])
michael@0:     {
michael@0:         const char* value = dom.findAttr(node, attr);
michael@0:         if (value)
michael@0:             SkDebugf("unknown attribute %s=\"%s\"\n", attr, value);
michael@0:     }
michael@0: #else
michael@0:     #define assert_no_attr(dom, node, attr)
michael@0: #endif
michael@0: 
michael@0: #include "SkAnimator.h"
michael@0: #include "SkTime.h"
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: enum SkinType {
michael@0:     kPushButton_SkinType,
michael@0:     kStaticText_SkinType,
michael@0: 
michael@0:     kSkinTypeCount
michael@0: };
michael@0: 
michael@0: struct SkinSuite {
michael@0:     SkinSuite();
michael@0:     ~SkinSuite()
michael@0:     {
michael@0:         for (int i = 0; i < kSkinTypeCount; i++)
michael@0:             delete fAnimators[i];
michael@0:     }
michael@0: 
michael@0:     SkAnimator*    get(SkinType);
michael@0: 
michael@0: private:
michael@0:     SkAnimator*    fAnimators[kSkinTypeCount];
michael@0: };
michael@0: 
michael@0: SkinSuite::SkinSuite()
michael@0: {
michael@0:     static const char kSkinPath[] = "skins/";
michael@0: 
michael@0:     static const char* gSkinNames[] = {
michael@0:         "pushbutton_skin.xml",
michael@0:         "statictext_skin.xml"
michael@0:     };
michael@0: 
michael@0:     for (unsigned i = 0; i < SK_ARRAY_COUNT(gSkinNames); i++)
michael@0:     {
michael@0:         size_t        len = strlen(gSkinNames[i]);
michael@0:         SkString    path(sizeof(kSkinPath) - 1 + len);
michael@0: 
michael@0:         memcpy(path.writable_str(), kSkinPath, sizeof(kSkinPath) - 1);
michael@0:         memcpy(path.writable_str() + sizeof(kSkinPath) - 1, gSkinNames[i], len);
michael@0: 
michael@0:         fAnimators[i] = new SkAnimator;
michael@0:         if (!fAnimators[i]->decodeURI(path.c_str()))
michael@0:         {
michael@0:             delete fAnimators[i];
michael@0:             fAnimators[i] = NULL;
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: SkAnimator* SkinSuite::get(SkinType st)
michael@0: {
michael@0:     SkASSERT((unsigned)st < kSkinTypeCount);
michael@0:     return fAnimators[st];
michael@0: }
michael@0: 
michael@0: static SkinSuite* gSkinSuite;
michael@0: 
michael@0: static SkAnimator* get_skin_animator(SkinType st)
michael@0: {
michael@0: #if 0
michael@0:     if (gSkinSuite == NULL)
michael@0:         gSkinSuite = new SkinSuite;
michael@0:     return gSkinSuite->get(st);
michael@0: #else
michael@0:     return NULL;
michael@0: #endif
michael@0: }
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: void SkWidget::Init()
michael@0: {
michael@0: }
michael@0: 
michael@0: void SkWidget::Term()
michael@0: {
michael@0:     delete gSkinSuite;
michael@0: }
michael@0: 
michael@0: void SkWidget::onEnabledChange()
michael@0: {
michael@0:     this->inval(NULL);
michael@0: }
michael@0: 
michael@0: void SkWidget::postWidgetEvent()
michael@0: {
michael@0:     if (!fEvent.isType("") && this->hasListeners())
michael@0:     {
michael@0:         this->prepareWidgetEvent(&fEvent);
michael@0:         this->postToListeners(fEvent);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkWidget::prepareWidgetEvent(SkEvent*)
michael@0: {
michael@0:     // override in subclass to add any additional fields before posting
michael@0: }
michael@0: 
michael@0: void SkWidget::onInflate(const SkDOM& dom, const SkDOM::Node* node)
michael@0: {
michael@0:     this->INHERITED::onInflate(dom, node);
michael@0: 
michael@0:     if ((node = dom.getFirstChild(node, "event")) != NULL)
michael@0:         fEvent.inflate(dom, node);
michael@0: }
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: size_t SkHasLabelWidget::getLabel(SkString* str) const
michael@0: {
michael@0:     if (str)
michael@0:         *str = fLabel;
michael@0:     return fLabel.size();
michael@0: }
michael@0: 
michael@0: size_t SkHasLabelWidget::getLabel(char buffer[]) const
michael@0: {
michael@0:     if (buffer)
michael@0:         memcpy(buffer, fLabel.c_str(), fLabel.size());
michael@0:     return fLabel.size();
michael@0: }
michael@0: 
michael@0: void SkHasLabelWidget::setLabel(const SkString& str)
michael@0: {
michael@0:     this->setLabel(str.c_str(), str.size());
michael@0: }
michael@0: 
michael@0: void SkHasLabelWidget::setLabel(const char label[])
michael@0: {
michael@0:     this->setLabel(label, strlen(label));
michael@0: }
michael@0: 
michael@0: void SkHasLabelWidget::setLabel(const char label[], size_t len)
michael@0: {
michael@0:     if (!fLabel.equals(label, len))
michael@0:     {
michael@0:         fLabel.set(label, len);
michael@0:         this->onLabelChange();
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkHasLabelWidget::onLabelChange()
michael@0: {
michael@0:     // override in subclass
michael@0: }
michael@0: 
michael@0: void SkHasLabelWidget::onInflate(const SkDOM& dom, const SkDOM::Node* node)
michael@0: {
michael@0:     this->INHERITED::onInflate(dom, node);
michael@0: 
michael@0:     const char* text = dom.findAttr(node, "label");
michael@0:     if (text)
michael@0:         this->setLabel(text);
michael@0: }
michael@0: 
michael@0: /////////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: void SkButtonWidget::setButtonState(State state)
michael@0: {
michael@0:     if (fState != state)
michael@0:     {
michael@0:         fState = state;
michael@0:         this->onButtonStateChange();
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkButtonWidget::onButtonStateChange()
michael@0: {
michael@0:     this->inval(NULL);
michael@0: }
michael@0: 
michael@0: void SkButtonWidget::onInflate(const SkDOM& dom, const SkDOM::Node* node)
michael@0: {
michael@0:     this->INHERITED::onInflate(dom, node);
michael@0: 
michael@0:     int    index;
michael@0:     if ((index = dom.findList(node, "buttonState", "off,on,unknown")) >= 0)
michael@0:         this->setButtonState((State)index);
michael@0: }
michael@0: 
michael@0: /////////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: bool SkPushButtonWidget::onEvent(const SkEvent& evt)
michael@0: {
michael@0:     if (evt.isType(SK_EventType_Key) && evt.getFast32() == kOK_SkKey)
michael@0:     {
michael@0:         this->postWidgetEvent();
michael@0:         return true;
michael@0:     }
michael@0:     return this->INHERITED::onEvent(evt);
michael@0: }
michael@0: 
michael@0: static const char* computeAnimatorState(int enabled, int focused, SkButtonWidget::State state)
michael@0: {
michael@0:     if (!enabled)
michael@0:         return "disabled";
michael@0:     if (state == SkButtonWidget::kOn_State)
michael@0:     {
michael@0:         SkASSERT(focused);
michael@0:         return "enabled-pressed";
michael@0:     }
michael@0:     if (focused)
michael@0:         return "enabled-focused";
michael@0:     return "enabled";
michael@0: }
michael@0: 
michael@0: #include "SkBlurMask.h"
michael@0: #include "SkBlurMaskFilter.h"
michael@0: #include "SkEmbossMaskFilter.h"
michael@0: 
michael@0: static void create_emboss(SkPaint* paint, SkScalar radius, bool focus, bool pressed)
michael@0: {
michael@0:     SkEmbossMaskFilter::Light    light;
michael@0: 
michael@0:     light.fDirection[0] = SK_Scalar1/2;
michael@0:     light.fDirection[1] = SK_Scalar1/2;
michael@0:     light.fDirection[2] = SK_Scalar1/3;
michael@0:     light.fAmbient        = 0x48;
michael@0:     light.fSpecular        = 0x80;
michael@0: 
michael@0:     if (pressed)
michael@0:     {
michael@0:         light.fDirection[0] = -light.fDirection[0];
michael@0:         light.fDirection[1] = -light.fDirection[1];
michael@0:     }
michael@0:     if (focus)
michael@0:         light.fDirection[2] += SK_Scalar1/4;
michael@0: 
michael@0:     SkScalar sigma = SkBlurMask::ConvertRadiusToSigma(radius);
michael@0:     paint->setMaskFilter(new SkEmbossMaskFilter(sigma, light))->unref();
michael@0: }
michael@0: 
michael@0: void SkPushButtonWidget::onDraw(SkCanvas* canvas)
michael@0: {
michael@0:     this->INHERITED::onDraw(canvas);
michael@0: 
michael@0:     SkString label;
michael@0:     this->getLabel(&label);
michael@0: 
michael@0:     SkAnimator* anim = get_skin_animator(kPushButton_SkinType);
michael@0: 
michael@0:     if (anim)
michael@0:     {
michael@0:         SkEvent    evt("user");
michael@0: 
michael@0:         evt.setString("id", "prime");
michael@0:         evt.setScalar("prime-width", this->width());
michael@0:         evt.setScalar("prime-height", this->height());
michael@0:         evt.setString("prime-text", label);
michael@0:         evt.setString("prime-state", computeAnimatorState(this->isEnabled(), this->hasFocus(), this->getButtonState()));
michael@0: 
michael@0:         (void)anim->doUserEvent(evt);
michael@0:         SkPaint paint;
michael@0:         anim->draw(canvas, &paint, SkTime::GetMSecs());
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         SkRect    r;
michael@0:         SkPaint    p;
michael@0: 
michael@0:         r.set(0, 0, this->width(), this->height());
michael@0:         p.setAntiAliasOn(true);
michael@0:         p.setColor(SK_ColorBLUE);
michael@0:         create_emboss(&p, SkIntToScalar(12)/5, this->hasFocus(), this->getButtonState() == kOn_State);
michael@0:         canvas->drawRoundRect(r, SkScalarHalf(this->height()), SkScalarHalf(this->height()), p);
michael@0:         p.setMaskFilter(NULL);
michael@0: 
michael@0:         p.setTextAlign(SkPaint::kCenter_Align);
michael@0: 
michael@0:         SkTextBox    box;
michael@0:         box.setMode(SkTextBox::kOneLine_Mode);
michael@0:         box.setSpacingAlign(SkTextBox::kCenter_SpacingAlign);
michael@0:         box.setBox(0, 0, this->width(), this->height());
michael@0: 
michael@0: //        if (this->getButtonState() == kOn_State)
michael@0: //            p.setColor(SK_ColorRED);
michael@0: //        else
michael@0:             p.setColor(SK_ColorWHITE);
michael@0: 
michael@0:         box.draw(canvas, label.c_str(), label.size(), p);
michael@0:     }
michael@0: }
michael@0: 
michael@0: SkView::Click* SkPushButtonWidget::onFindClickHandler(SkScalar x, SkScalar y, unsigned modi)
michael@0: {
michael@0:     this->acceptFocus();
michael@0:     return new Click(this);
michael@0: }
michael@0: 
michael@0: bool SkPushButtonWidget::onClick(Click* click)
michael@0: {
michael@0:     SkRect    r;
michael@0:     State    state = kOff_State;
michael@0: 
michael@0:     this->getLocalBounds(&r);
michael@0:     if (r.contains(click->fCurr))
michael@0:     {
michael@0:         if (click->fState == Click::kUp_State)
michael@0:             this->postWidgetEvent();
michael@0:         else
michael@0:             state = kOn_State;
michael@0:     }
michael@0:     this->setButtonState(state);
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: //////////////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: SkStaticTextView::SkStaticTextView(U32 flags) : SkView(flags)
michael@0: {
michael@0:     fMargin.set(0, 0);
michael@0:     fMode = kFixedSize_Mode;
michael@0:     fSpacingAlign = SkTextBox::kStart_SpacingAlign;
michael@0: }
michael@0: 
michael@0: SkStaticTextView::~SkStaticTextView()
michael@0: {
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::computeSize()
michael@0: {
michael@0:     if (fMode == kAutoWidth_Mode)
michael@0:     {
michael@0:         SkScalar width = fPaint.measureText(fText.c_str(), fText.size(), NULL, NULL);
michael@0:         this->setWidth(width + fMargin.fX * 2);
michael@0:     }
michael@0:     else if (fMode == kAutoHeight_Mode)
michael@0:     {
michael@0:         SkScalar width = this->width() - fMargin.fX * 2;
michael@0:         int lines = width > 0 ? SkTextLineBreaker::CountLines(fText.c_str(), fText.size(), fPaint, width) : 0;
michael@0: 
michael@0:         SkScalar    before, after;
michael@0:         (void)fPaint.measureText(0, NULL, &before, &after);
michael@0: 
michael@0:         this->setHeight(lines * (after - before) + fMargin.fY * 2);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setMode(Mode mode)
michael@0: {
michael@0:     SkASSERT((unsigned)mode < kModeCount);
michael@0: 
michael@0:     if (fMode != mode)
michael@0:     {
michael@0:         fMode = SkToU8(mode);
michael@0:         this->computeSize();
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setSpacingAlign(SkTextBox::SpacingAlign align)
michael@0: {
michael@0:     fSpacingAlign = SkToU8(align);
michael@0:     this->inval(NULL);
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::getMargin(SkPoint* margin) const
michael@0: {
michael@0:     if (margin)
michael@0:         *margin = fMargin;
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setMargin(SkScalar dx, SkScalar dy)
michael@0: {
michael@0:     if (fMargin.fX != dx || fMargin.fY != dy)
michael@0:     {
michael@0:         fMargin.set(dx, dy);
michael@0:         this->computeSize();
michael@0:         this->inval(NULL);
michael@0:     }
michael@0: }
michael@0: 
michael@0: size_t SkStaticTextView::getText(SkString* text) const
michael@0: {
michael@0:     if (text)
michael@0:         *text = fText;
michael@0:     return fText.size();
michael@0: }
michael@0: 
michael@0: size_t SkStaticTextView::getText(char text[]) const
michael@0: {
michael@0:     if (text)
michael@0:         memcpy(text, fText.c_str(), fText.size());
michael@0:     return fText.size();
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setText(const SkString& text)
michael@0: {
michael@0:     this->setText(text.c_str(), text.size());
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setText(const char text[])
michael@0: {
michael@0:     this->setText(text, strlen(text));
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setText(const char text[], size_t len)
michael@0: {
michael@0:     if (!fText.equals(text, len))
michael@0:     {
michael@0:         fText.set(text, len);
michael@0:         this->computeSize();
michael@0:         this->inval(NULL);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::getPaint(SkPaint* paint) const
michael@0: {
michael@0:     if (paint)
michael@0:         *paint = fPaint;
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setPaint(const SkPaint& paint)
michael@0: {
michael@0:     if (fPaint != paint)
michael@0:     {
michael@0:         fPaint = paint;
michael@0:         this->computeSize();
michael@0:         this->inval(NULL);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::onDraw(SkCanvas* canvas)
michael@0: {
michael@0:     this->INHERITED::onDraw(canvas);
michael@0: 
michael@0:     if (fText.isEmpty())
michael@0:         return;
michael@0: 
michael@0:     SkTextBox    box;
michael@0: 
michael@0:     box.setMode(fMode == kAutoWidth_Mode ? SkTextBox::kOneLine_Mode : SkTextBox::kLineBreak_Mode);
michael@0:     box.setSpacingAlign(this->getSpacingAlign());
michael@0:     box.setBox(fMargin.fX, fMargin.fY, this->width() - fMargin.fX, this->height() - fMargin.fY);
michael@0:     box.draw(canvas, fText.c_str(), fText.size(), fPaint);
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::onInflate(const SkDOM& dom, const SkDOM::Node* node)
michael@0: {
michael@0:     this->INHERITED::onInflate(dom, node);
michael@0: 
michael@0:     int    index;
michael@0:     if ((index = dom.findList(node, "mode", "fixed,auto-width,auto-height")) >= 0)
michael@0:         this->setMode((Mode)index);
michael@0:     else
michael@0:         assert_no_attr(dom, node, "mode");
michael@0: 
michael@0:     if ((index = dom.findList(node, "spacing-align", "start,center,end")) >= 0)
michael@0:         this->setSpacingAlign((SkTextBox::SpacingAlign)index);
michael@0:     else
michael@0:         assert_no_attr(dom, node, "mode");
michael@0: 
michael@0:     SkScalar s[2];
michael@0:     if (dom.findScalars(node, "margin", s, 2))
michael@0:         this->setMargin(s[0], s[1]);
michael@0:     else
michael@0:         assert_no_attr(dom, node, "margin");
michael@0: 
michael@0:     const char* text = dom.findAttr(node, "text");
michael@0:     if (text)
michael@0:         this->setText(text);
michael@0: 
michael@0:     if ((node = dom.getFirstChild(node, "paint")) != NULL)
michael@0:         SkPaint_Inflate(&fPaint, dom, node);
michael@0: }
michael@0: 
michael@0: /////////////////////////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: #include "SkImageDecoder.h"
michael@0: 
michael@0: SkBitmapView::SkBitmapView(U32 flags) : SkView(flags)
michael@0: {
michael@0: }
michael@0: 
michael@0: SkBitmapView::~SkBitmapView()
michael@0: {
michael@0: }
michael@0: 
michael@0: bool SkBitmapView::getBitmap(SkBitmap* bitmap) const
michael@0: {
michael@0:     if (bitmap)
michael@0:         *bitmap = fBitmap;
michael@0:     return fBitmap.colorType() != kUnknown_SkColorType;
michael@0: }
michael@0: 
michael@0: void SkBitmapView::setBitmap(const SkBitmap* bitmap, bool viewOwnsPixels)
michael@0: {
michael@0:     if (bitmap)
michael@0:     {
michael@0:         fBitmap = *bitmap;
michael@0:         fBitmap.setOwnsPixels(viewOwnsPixels);
michael@0:     }
michael@0: }
michael@0: 
michael@0: bool SkBitmapView::loadBitmapFromFile(const char path[])
michael@0: {
michael@0:     SkBitmap    bitmap;
michael@0: 
michael@0:     if (SkImageDecoder::DecodeFile(path, &bitmap))
michael@0:     {
michael@0:         this->setBitmap(&bitmap, true);
michael@0:         bitmap.setOwnsPixels(false);
michael@0:         return true;
michael@0:     }
michael@0:     return false;
michael@0: }
michael@0: 
michael@0: void SkBitmapView::onDraw(SkCanvas* canvas)
michael@0: {
michael@0:     if (fBitmap.colorType() != kUnknown_SkColorType &&
michael@0:         fBitmap.width() && fBitmap.height())
michael@0:     {
michael@0:         SkAutoCanvasRestore    restore(canvas, true);
michael@0:         SkPaint                p;
michael@0: 
michael@0:         p.setFilterType(SkPaint::kBilinear_FilterType);
michael@0:         canvas->scale(    this->width() / fBitmap.width(),
michael@0:                         this->height() / fBitmap.height(),
michael@0:                         0, 0);
michael@0:         canvas->drawBitmap(fBitmap, 0, 0, p);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkBitmapView::onInflate(const SkDOM& dom, const SkDOM::Node* node)
michael@0: {
michael@0:     this->INHERITED::onInflate(dom, node);
michael@0: 
michael@0:     const char* src = dom.findAttr(node, "src");
michael@0:     if (src)
michael@0:         (void)this->loadBitmapFromFile(src);
michael@0: }
michael@0: 
michael@0: #endif