skia2/samplecode/SampleBevel.cpp

834 lines
28 KiB
C++
Raw Normal View History

/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SampleCode.h"
#include "SkCanvas.h"
#include "SkLightingShader.h"
#include "SkNormalSource.h"
#include "sk_tool_utils.h"
class ParentControl;
// Abstract base class for all components that a control panel must have
class Control : public SkRefCnt {
public:
Control(SkString name)
: fName(name)
, fParent(nullptr)
, fRelativePos(SkPoint::Make(0.0f, 0.0f)) {}
// Use this to propagate a click's position down to a control. Gets modulated by the component's
// relative position
bool click(const SkPoint& clickPos) {
SkPoint relativeClickPos = SkPoint::Make(clickPos.fX - fRelativePos.fX,
clickPos.fY - fRelativePos.fY);
return this->onClick(relativeClickPos);
}
// Use this to draw the control and its appropriate children. Gets modulated by the component's
// relative position.
void drawContent(SkCanvas *canvas) {
canvas->save();
canvas->translate(fRelativePos.fX, fRelativePos.fY);
this->onDrawContent(canvas);
canvas->restore();
}
/* Returns true when click position argumend lands over a control region in this control. Click
* position gets modulated by the component's relative position.
*
* @param click The position of the click in the coordinate space relative to the parent
*/
bool isInCtrlRegion(const SkPoint& click) {
SkPoint relativeClickPos = SkPoint::Make(click.fX - fRelativePos.fX,
click.fY - fRelativePos.fY);
return this->onIsInCtrlRegion(relativeClickPos);
}
// Returns height of content drawn
virtual SkScalar height() const = 0;
// Sets the parent of this component. May only be used once. Height must remain constant after
// parent is set.
void setParent(ParentControl *parent, const SkPoint& relativePos) {
SkASSERT(parent);
SkASSERT(!fParent); // No chidren transfer since relativeY would get invalid for younger kid
fParent = parent;
fRelativePos = relativePos;
this->onSetParent();
}
// Overriden by sub-classes that need to recompute fields after parent is set. Called after
// setting fParent.
virtual void onSetParent() {}
// Overriden by sub-classes that need to know when a click is released.
virtual void onClickRelease() {}
protected:
// Draws a label for the component, using its name and a passed value. Does NOT modulate by
// relative height, expects CTM to have been adjusted in advance.
void drawLabel(SkCanvas *canvas, const SkString& valueStr) const {
// TODO Cache this
sk_sp<SkTypeface> fLabelTypeface =
sk_tool_utils::create_portable_typeface("sans-serif", SkFontStyle());
SkString label;
label.append(fName);
label.append(": ");
label.append(valueStr);
SkPaint labelPaint;
labelPaint.setTypeface(fLabelTypeface);
labelPaint.setAntiAlias(true);
labelPaint.setColor(0xFFFFFFFF);
labelPaint.setTextSize(12.0f);
canvas->drawText(label.c_str(), label.size(), 0, kLabelHeight - 6.0f, labelPaint);
}
SkString fName;
ParentControl* fParent;
static constexpr SkScalar kLabelHeight = 20.0f;
private:
// Overriden by sub-class to draw component. Do not call directly, drawContent() modulates by
// relative position.
virtual void onDrawContent(SkCanvas *canvas) = 0;
// Overriden by sub-class to handle clicks. Do not call directly, click() modulates by relative
// position. Return true if holding mouse capture
virtual bool onClick(const SkPoint& clickPos) { return false; };
// Overriden by sub-classes with controls. Should return true if clickPos lands inside a control
// region, to enable mouse caputre.
virtual bool onIsInCtrlRegion(const SkPoint& clickPos) const { return false; };
// The position of the control relative to it's parent
SkPoint fRelativePos;
};
class ParentControl : public Control { // Interface for all controls that have children
public:
ParentControl(const SkString& name) : INHERITED(name) {}
// Adds a child
virtual void add(sk_sp<Control> control) = 0;
// Returns the control's width. Used to propagate width down to components that don't specify it
virtual SkScalar width() const = 0;
private:
typedef Control INHERITED;
};
class ControlPanel : public ParentControl {
public:
ControlPanel(SkScalar width)
: ParentControl(SkString("ControlPanel"))
, fWidth(width)
, fHeight(0.0f)
, fSelectedControl(-1) {}
// Width unspecified, expectation is inheritance from parent
ControlPanel() : ControlPanel(-1.0f) {}
// Use this for introducing clicks on a ControlPanel from outside of the framework. It
// propagates click release or position down the chain. Returns false when click capture is
// being released.
bool inClick(SkView::Click *inClick) {
if (SkView::Click::State::kUp_State == inClick->fState) {
this->onClickRelease();
return false;
}
return this->click(inClick->fCurr);
}
// Add children
void add(sk_sp<Control> control) override {
SkASSERT(!fParent); // Validity of parent's relativeY and fHeight depends on immutability
fControls.push_back(control);
control->setParent(this, SkPoint::Make(0.0f, fHeight));
fHeight += control->height();
}
SkScalar width() const override {
return fParent ? fParent->width() : fWidth; // Width inherited from parent if there is one
}
SkScalar height() const override {
return fHeight;
}
// Propagate click release to selected control, deselect control
void onClickRelease() override {
if (fSelectedControl >= 0) {
fControls[fSelectedControl]->onClickRelease();
}
fSelectedControl = -1;
}
// Propagate onSetParent() down to children, some might need fParent->width() refresh
void onSetParent() override {
for (int i = 0; i < fControls.count(); i++) {
fControls[i]->onSetParent();
}
}
// Holds a vertical shelf of controls. Can't be hierarchy root if not given a width value.
static sk_sp<ParentControl> Make() {
return sk_sp<ParentControl>(new ControlPanel());
}
// Holds a vertical shelf of controls. Only control that can be hooked from outside the
// framework.
static sk_sp<ParentControl> Make(SkScalar width) {
return sk_sp<ParentControl>(new ControlPanel(width));
}
protected:
// Returns true if control panel has mouse captured, false when it is ready to release
// capture
bool onClick(const SkPoint& click) override {
if (fSelectedControl == -1) { // If no child control selected, check every child
for (int i = 0; i < fControls.count(); i++) {
if (fControls[i]->isInCtrlRegion(click)) {
fSelectedControl = i;
break;
}
}
}
if (fSelectedControl >= 0) { // If child control selected, propagate click
bool keepSelection = fControls[fSelectedControl]->click(click);
if (!keepSelection) {
fSelectedControl = -1;
}
return keepSelection;
}
return false;
}
// Draw all children
void onDrawContent(SkCanvas* canvas) override {
canvas->save();
for (int i = 0; i < fControls.count(); i++) {
fControls[i]->drawContent(canvas);
}
canvas->restore();
}
// Check all children's control regions
bool onIsInCtrlRegion(const SkPoint& clickPos) const override {
for (int i = 0; i < fControls.count(); i++) {
if (fControls[i]->isInCtrlRegion(clickPos)) {
return true;
}
}
return false;
}
private:
SkScalar fWidth;
SkScalar fHeight;
SkTArray<sk_sp<Control>> fControls;
int fSelectedControl;
};
class DiscreteSliderControl : public Control {
public:
SkScalar height() const override {
return 2.0f * kLabelHeight;
}
// Set width-dependant variables when new parent is set
void onSetParent() override {
fCtrlRegion = SkRect::MakeXYWH(0.0f, kLabelHeight, fParent->width(), kSliderHeight);
fSliderRange = fParent->width() - kSliderWidth;
}
/* Make a slider for an integer value. Snaps to discrete positions.
*
* @params name The name of the control, displayed in the label
* @params output Pointer to the integer that will be set by the slider
* @params min Min value for output.
* @params max Max value for output.
*/
static sk_sp<Control> Make(SkString name, int* output, int min, int max) {
return sk_sp<Control>(new DiscreteSliderControl(name, output, min, max));
}
protected:
void onDrawContent(SkCanvas* canvas) override {
SkASSERT(fParent);
int numChoices = fMax - fMin + 1;
fSlider.offsetTo(fSliderRange * ( (*fOutput)/SkIntToScalar(numChoices)
+ 1.0f/(2.0f * numChoices) ),
fSlider.fTop);
SkString valueStr;
valueStr.appendS32(*fOutput);
this->drawLabel(canvas, valueStr);
SkPaint sliderPaint;
sliderPaint.setColor(0xFFF3F3F3);
canvas->drawRect(fSlider, sliderPaint);
SkPaint ctrlRegionPaint;
ctrlRegionPaint.setColor(0xFFFFFFFF);
ctrlRegionPaint.setStyle(SkPaint::kStroke_Style);
ctrlRegionPaint.setStrokeWidth(2.0f);
canvas->drawRect(fCtrlRegion, ctrlRegionPaint);
}
bool onClick(const SkPoint& clickPos) override {
SkASSERT(fParent);
SkScalar x = SkScalarPin(clickPos.fX, 0.0f, fSliderRange);
int numChoices = fMax - fMin + 1;
*fOutput = SkTMin(SkScalarFloorToInt(numChoices * x / fSliderRange) + fMin, fMax);
return true;
}
bool onIsInCtrlRegion(const SkPoint& clickPos) const override {
SkASSERT(fParent);
return fCtrlRegion.contains(SkRect::MakeXYWH(clickPos.fX, clickPos.fY, 1, 1));
}
private:
DiscreteSliderControl(SkString name, int* output, int min, int max)
: INHERITED(name)
, fOutput(output)
, fMin(min)
, fMax(max) {
fSlider = SkRect::MakeXYWH(0, kLabelHeight, kSliderWidth, kSliderHeight);
}
int* fOutput;
int fMin;
int fMax;
SkRect fSlider; // The rectangle that slides
// The region in which the rectangle slides. Also the region in which mouse is caputred
SkRect fCtrlRegion;
SkScalar fSliderRange; // The width in pixels over which the slider can slide
static constexpr SkScalar kSliderHeight = 20.0f;
static constexpr SkScalar kSliderWidth = 10.0f;
typedef Control INHERITED;
};
class ControlSwitcher : public ParentControl {
public:
// Add children
void add(sk_sp<Control> control) override {
SkASSERT(!fParent); // Validity of parent's relativeY and fHeight depends on immutability
fControls.push_back(control);
control->setParent(this, SkPoint::Make(0.0f, kSelectorHeight));
fHeight = SkMaxScalar(fHeight, control->height()); // Setting height to max child height.
}
SkScalar width() const override { return fParent ? (fParent->width()) : 0; }
SkScalar height() const override {
return fHeight;
}
// Propagate onClickRelease to control that currently captures mouse
void onClickRelease() override {
if (fCtrlOnClick) {
fCtrlOnClick->onClickRelease();
}
fCtrlOnClick = nullptr;
}
void onSetParent() override {
for (int i = 0; i < fControls.count(); i++) {
fControls[i]->onSetParent(); // Propagate to children
}
// Finalize control selector
// TODO can be moved to constructor if list-initialized
if (!finalizedChildren) {
fControlSelector = DiscreteSliderControl::Make(
SkString(fName), &fSelectedControl, 0, fControls.count()-1);
fControlSelector->setParent(this, SkPoint::Make(0.0f, 0.0f));
fHeight += kSelectorHeight;
SkASSERT(fControlSelector->height() <= kSelectorHeight);
}
}
/* A set of a selector and a list of controls. Displays the control from the list of controls
* with the index set by the aforementioned selector.
*
* @param name The name of the switcher. Will be displayed in the selector's label.
*/
static sk_sp<ParentControl> Make(const SkString& name) {
return sk_sp<ParentControl>(new ControlSwitcher(name));
}
protected:
// Draw selector and currently selected control
void onDrawContent(SkCanvas* canvas) override {
fControlSelector->drawContent(canvas);
fControls[fSelectedControl]->drawContent(canvas);
}
// Returns true if control panel has mouse captured, false when it is ready to release
// capture
bool onClick(const SkPoint& click) override {
if (!fCtrlOnClick) {
if (fControlSelector->isInCtrlRegion(click)) {
fCtrlOnClick = fControlSelector.get();
} else if (fControls[fSelectedControl]->isInCtrlRegion(click)) {
fCtrlOnClick = fControls[fSelectedControl].get();
}
}
if (fCtrlOnClick) {
return fCtrlOnClick->click(click);
}
return false;
}
// Is in control region of selector or currently selected control
bool onIsInCtrlRegion(const SkPoint& clickPos) const override {
if (fControlSelector->isInCtrlRegion(clickPos)) {
return true;
}
if (fControls[fSelectedControl]->isInCtrlRegion(clickPos)) {
return true;
}
return false;
}
private:
ControlSwitcher(const SkString& name)
: INHERITED(name)
, fHeight(0.0)
, fSelectedControl(0)
, fCtrlOnClick(nullptr){}
bool finalizedChildren = false;
sk_sp<Control> fControlSelector;
SkScalar fHeight;
SkTArray<sk_sp<Control>> fControls;
int fSelectedControl;
Control* fCtrlOnClick;
static constexpr SkScalar kSelectorHeight = 40.0f;
typedef ParentControl INHERITED;
};
class ContinuousSliderControl : public Control {
public:
SkScalar height() const override {
return 2.0f * kLabelHeight;
}
void onSetParent() override {
fSlider = SkRect::MakeXYWH(0, kLabelHeight, kSliderWidth, kSliderHeight);
fCtrlRegion = SkRect::MakeXYWH(0.0f, kLabelHeight, fParent->width(), kSliderHeight);
fSliderRange = fParent->width() - kSliderWidth;
}
/* Make a slider for an SkScalar.
*
* @params name The name of the control, displayed in the label
* @params output Pointer to the SkScalar that will be set by the slider
* @params min Min value for output
* @params max Max value for output
*/
static sk_sp<Control> Make(const SkString& name, SkScalar* output, SkScalar min, SkScalar max) {
return sk_sp<Control>(new ContinuousSliderControl(name, output, min, max));
}
protected:
void onDrawContent(SkCanvas* canvas) override {
SkASSERT(fParent);
SkScalar x = fSliderRange * (*fOutput - fMin) / (fMax - fMin);
fSlider.offsetTo(SkScalarPin(x, 0.0f, fSliderRange), fSlider.fTop);
SkString valueStr;
valueStr.appendScalar(*fOutput);
this->drawLabel(canvas, valueStr);
SkPaint sliderPaint;
sliderPaint.setColor(0xFFF3F3F3);
canvas->drawRect(fSlider, sliderPaint);
SkPaint ctrlRegionPaint;
ctrlRegionPaint.setColor(0xFFFFFFFF);
ctrlRegionPaint.setStyle(SkPaint::kStroke_Style);
ctrlRegionPaint.setStrokeWidth(2.0f);
canvas->drawRect(fCtrlRegion, ctrlRegionPaint);
}
bool onClick(const SkPoint& clickPos) override {
SkASSERT(fParent);
SkScalar x = SkScalarPin(clickPos.fX, 0.0f, fSliderRange);
*fOutput = (x/fSliderRange) * (fMax - fMin) + fMin;
return true;
}
bool onIsInCtrlRegion(const SkPoint& clickPos) const override {
SkASSERT(fParent);
return fCtrlRegion.contains(SkRect::MakeXYWH(clickPos.fX, clickPos.fY, 1, 1));
}
private:
ContinuousSliderControl(const SkString& name, SkScalar* output, SkScalar min, SkScalar max)
: INHERITED(name)
, fOutput(output)
, fMin(min)
, fMax(max) {}
SkScalar* fOutput;
SkScalar fMin;
SkScalar fMax;
SkRect fSlider;
SkRect fCtrlRegion;
SkScalar fSliderRange;
static constexpr SkScalar kSliderHeight = 20.0f;
static constexpr SkScalar kSliderWidth = 10.0f;
typedef Control INHERITED;
};
class RadialDirectionControl : public Control {
public:
SkScalar height() const override {
return kLabelHeight + 2.0f * kRegionRadius;
}
/* Make a direction selector.
*
* @params name The name of the control, displayed in the label
* @params output Pointer to the SkVector that will be set by the slider
*/
static sk_sp<Control> Make(const SkString& name, SkVector* output) {
return sk_sp<Control>(new RadialDirectionControl(name, output));
}
protected:
void onDrawContent(SkCanvas* canvas) override {
SkASSERT(fParent);
SkString valueStr;
valueStr.appendf("%.2f, %.2f", fOutput->fX, fOutput->fY);
this->drawLabel(canvas, valueStr);
SkPoint lineEnd = SkPoint::Make(fCtrlRegion.centerX(), fCtrlRegion.centerY())
+ (*fOutput * (kRegionRadius - kCapRadius));
SkPaint linePaint;
linePaint.setColor(0xFFF3F3F3);
linePaint.setStrokeWidth(kStrokeWidth);
linePaint.setAntiAlias(true);
linePaint.setStrokeCap(SkPaint::kRound_Cap);
canvas->drawLine(fCtrlRegion.centerX(), fCtrlRegion.centerY(),
lineEnd.fX, lineEnd.fY, linePaint);
SkPaint ctrlRegionPaint;
ctrlRegionPaint.setColor(0xFFFFFFFF);
ctrlRegionPaint.setStyle(SkPaint::kStroke_Style);
ctrlRegionPaint.setStrokeWidth(2.0f);
ctrlRegionPaint.setAntiAlias(true);
canvas->drawCircle(fCtrlRegion.centerX(), fCtrlRegion.centerY(), kRegionRadius,
ctrlRegionPaint);
}
bool onClick(const SkPoint& clickPos) override {
SkASSERT(fParent);
fOutput->fX = clickPos.fX - fCtrlRegion.centerX();
fOutput->fY = clickPos.fY - fCtrlRegion.centerY();
fOutput->normalize();
return true;
}
bool onIsInCtrlRegion(const SkPoint& clickPos) const override {
SkASSERT(fParent);
return fCtrlRegion.contains(SkRect::MakeXYWH(clickPos.fX, clickPos.fY,
1, 1));
}
private:
RadialDirectionControl(const SkString& name, SkVector* output)
: INHERITED(name)
, fOutput(output) {
fCtrlRegion = SkRect::MakeXYWH(0.0f, kLabelHeight,
kRegionRadius * 2.0f, kRegionRadius * 2.0f);
}
SkVector* fOutput;
SkRect fCtrlRegion;
static constexpr SkScalar kRegionRadius = 50.0f;
static constexpr SkScalar kStrokeWidth = 6.0f;
static constexpr SkScalar kCapRadius = kStrokeWidth / 2.0f;
typedef Control INHERITED;
};
class ColorDisplay: public Control {
public:
SkScalar height() const override {
return kHeight;
}
void onSetParent() override {
fDisplayRect = SkRect::MakeXYWH(0.0f, kPadding, fParent->width(), kHeight - kPadding);
}
/* Make a display that shows an SkColor3f.
*
* @params output Pointer to the SkColor3f that will be displayed
*/
static sk_sp<Control> Make(SkColor3f* input) {
return sk_sp<Control>(new ColorDisplay(SkString("ColorDisplay"), input));
}
protected:
void onDrawContent(SkCanvas* canvas) override {
SkASSERT(fParent);
SkPaint displayPaint;
displayPaint.setColor(SkColor4f::FromColor3f(*fInput, 1.0f).toSkColor());
canvas->drawRect(fDisplayRect, displayPaint);
}
private:
ColorDisplay(const SkString& name, SkColor3f* input)
: INHERITED(name)
, fInput(input) {}
SkColor3f* fInput;
SkRect fDisplayRect;
static constexpr SkScalar kHeight = 24.0f;
static constexpr SkScalar kPadding = 4.0f;
typedef Control INHERITED;
};
class BevelView : public SampleView {
public:
BevelView()
: fShapeBounds(SkRect::MakeWH(kShapeBoundsSize, kShapeBoundsSize))
, fControlPanel(kCtrlRange) {
this->setBGColor(0xFF666868); // Slightly colorized gray for contrast
// Controls
fBevelWidth = 25.0f;
fBevelHeight = 25.0f;
fBevelType = 0;
int currLight = 0;
fLightDefs[currLight++] =
{SkVector::Make(0.0f, 1.0f), 1.0f, SkColor3f::Make(0.6f, 0.45f, 0.3f)};
fLightDefs[currLight++] =
{SkVector::Make(0.0f, -1.0f), 1.0f, SkColor3f::Make(0.3f, 0.45f, 0.6f)};
fLightDefs[currLight++] =
{SkVector::Make(1.0f, 0.0f), 1.0f, SkColor3f::Make(0.0f, 0.0f, 0.0f)};
// Making sure we initialized all lights
SkASSERT(currLight == kNumLights);
fControlPanel.add(ContinuousSliderControl::Make(SkString("BevelWidth"), &fBevelWidth,
1.0f, kShapeBoundsSize));
fControlPanel.add(ContinuousSliderControl::Make(SkString("BevelHeight"), &fBevelHeight,
-50.0f, 50.0f));
fControlPanel.add(DiscreteSliderControl::Make(SkString("BevelType"), &fBevelType,
0, 2));
sk_sp<ParentControl> lightCtrlSelector = ControlSwitcher::Make(SkString("SelectedLight"));
for (int i = 0; i < kNumLights; i++) {
SkString name("Light");
name.appendS32(i);
sk_sp<ParentControl> currLightPanel = ControlPanel::Make();
SkString dirName(name);
dirName.append("Dir");
currLightPanel->add(RadialDirectionControl::Make(dirName, &(fLightDefs[i].fDirXY)));
SkString heightName(name);
heightName.append("Height");
currLightPanel->add(ContinuousSliderControl::Make(heightName, &(fLightDefs[i].fDirZ),
0.0f, 2.0f));
SkString redName(name);
redName.append("Red");
currLightPanel->add(ContinuousSliderControl::Make(redName, &(fLightDefs[i].fColor.fX),
0.0f, 1.0f));
SkString greenName(name);
greenName.append("Green");
currLightPanel->add(ContinuousSliderControl::Make(greenName, &(fLightDefs[i].fColor.fY),
0.0f, 1.0f));
SkString blueName(name);
blueName.append("Blue");
currLightPanel->add(ContinuousSliderControl::Make(blueName, &(fLightDefs[i].fColor.fZ),
0.0f, 1.0f));
currLightPanel->add(ColorDisplay::Make(&(fLightDefs[i].fColor)));
lightCtrlSelector->add(currLightPanel);
}
fControlPanel.add(lightCtrlSelector);
fControlPanelSelected = false;
fDirtyNormalSource = true;
fLabelTypeface = sk_tool_utils::create_portable_typeface("sans-serif", SkFontStyle());
}
protected:
bool onQuery(SkEvent *evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Bevel");
return true;
}
return this->INHERITED::onQuery(evt);
}
enum Shape {
kCircle_Shape,
kRect_Shape,
};
void drawShape(enum Shape shape, SkCanvas* canvas) {
canvas->save();
SkPaint paint;
if (fDirtyNormalSource) {
fNormalSource = SkNormalSource::MakeBevel((SkNormalSource::BevelType)fBevelType,
fBevelWidth, fBevelHeight);
fDirtyNormalSource = false;
}
paint.setShader(SkLightingShader::Make(nullptr, fNormalSource, fLights));
paint.setAntiAlias(true);
paint.setColor(0xFFDDDDDD);
switch (shape) {
case kCircle_Shape:
canvas->drawCircle(fShapeBounds.centerX(), fShapeBounds.centerY(),
fShapeBounds.width()/2.0f, paint);
break;
case kRect_Shape:
canvas->drawRect(fShapeBounds, paint);
break;
default:
SkDEBUGFAIL("Invalid shape enum for drawShape");
}
canvas->restore();
}
void onDrawContent(SkCanvas *canvas) override {
canvas->save();
canvas->resetMatrix(); // Force static control panel position
fControlPanel.drawContent(canvas);
canvas->restore();
SkLights::Builder builder;
for (int i = 0; i < kNumLights; i++) {
builder.add(SkLights::Light::MakeDirectional(fLightDefs[i].fColor,
SkPoint3::Make(fLightDefs[i].fDirXY.fX,
fLightDefs[i].fDirXY.fY,
fLightDefs[i].fDirZ)));
}
builder.add(SkLights::Light::MakeAmbient(SkColor3f::Make(0.4f, 0.4f, 0.4f)));
fLights = builder.finish();
// Draw shapes
SkScalar xPos = kCtrlRange + 25.0f;
SkScalar yPos = fShapeBounds.height();
for (Shape shape : { kCircle_Shape, kRect_Shape }) {
canvas->save();
canvas->translate(xPos, yPos);
this->drawShape(shape, canvas);
canvas->restore();
xPos += 1.2f * fShapeBounds.width();
}
}
SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override {
return new SkView::Click(this);
}
bool onClick(Click *click) override {
// Control panel mouse handling
fControlPanelSelected = fControlPanel.inClick(click);
if (fControlPanelSelected) { // Control modification
fDirtyNormalSource = true;
this->inval(nullptr);
return true;
}
// TODO move shapes
this->inval(nullptr);
return true;
}
private:
static constexpr int kNumTestRects = 3;
static constexpr SkScalar kShapeBoundsSize = 120.0f;
static constexpr SkScalar kCtrlRange = 150.0f;
static constexpr int kNumLights = 3;
const SkRect fShapeBounds;
SkScalar fBevelWidth;
SkScalar fBevelHeight;
int fBevelType;
sk_sp<SkNormalSource> fNormalSource;
bool fDirtyNormalSource;
sk_sp<SkLights> fLights;
struct LightDef {
SkVector fDirXY;
SkScalar fDirZ;
SkColor3f fColor;
LightDef() {}
LightDef(SkVector dirXY, SkScalar dirZ, SkColor3f color)
: fDirXY(dirXY)
, fDirZ(dirZ)
, fColor(color) {}
};
LightDef fLightDefs[kNumLights];
ControlPanel fControlPanel;
bool fControlPanelSelected;
sk_sp<SkTypeface> fLabelTypeface;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new BevelView; }
static SkViewRegister reg(MyFactory);