SkView::Click* SkView::findClickHandler(SkScalar x, SkScalar y, unsigned modi) {
if (x < 0 || y < 0 || x >= fWidth || y >= fHeight) {
return NULL;
}
if (this->onSendClickToChildren(x, y, modi)) {
F2BIter iter(this);
SkView* child;
while ((child = iter.next()) != NULL)
{
SkPoint p;
if (!child->globalToLocal(x, y, &p)) {
continue;
}
Click* click = child->findClickHandler(p.fX, p.fY, modi);
if (click) {
return click;
}
}
}
return this->onFindClickHandler(x, y, modi);
}
void SampleWindow::updateTitle() {
SkString title;
SkView::F2BIter iter(this);
SkView* view = iter.next();
SkEvent evt(gTitleEvtName);
if (view->doQuery(&evt)) {
title.set(evt.findString(gTitleEvtName));
}
if (title.size() == 0) {
title.set("<unknown>");
}
title.prepend(gCanvasTypePrefix[fCanvasType]);
title.prepend(" ");
title.prepend(configToString(this->getBitmap().config()));
if (fAnimating) {
title.prepend("<A> ");
}
if (fScale) {
title.prepend("<S> ");
}
if (fRotate) {
title.prepend("<R> ");
}
if (fNClip) {
title.prepend("<C> ");
}
this->setTitle(title.c_str());
}
bool SkWindow::handleKey(SkKey key) {
if (key == kNONE_SkKey)
return false;
if (this->onHandleKey(key))
return true;
// send an event to the focus-view
{
SkView* focus = this->getFocusView();
if (focus == nullptr)
focus = this;
SkEvent evt(SK_EventType_Key);
evt.setFast32(key);
if (focus->doEvent(evt))
return true;
}
if (key == kUp_SkKey || key == kDown_SkKey) {
if (this->moveFocus(key == kUp_SkKey ? kPrev_FocusDirection : kNext_FocusDirection) == nullptr)
this->onSetFocusView(nullptr);
return true;
}
return false;
}
SkView::Click* SkView::findClickHandler(SkScalar x, SkScalar y, unsigned modi) {
if (x < 0 || y < 0 || x >= fWidth || y >= fHeight) {
return nullptr;
}
if (this->onSendClickToChildren(x, y, modi)) {
F2BIter iter(this);
SkView* child;
while ((child = iter.next()) != nullptr) {
SkPoint p;
#if 0
if (!child->globalToLocal(x, y, &p)) {
continue;
}
#else
// the above seems broken, so just respecting fLoc for now <reed>
p.set(x - child->fLoc.x(), y - child->fLoc.y());
#endif
Click* click = child->findClickHandler(p.fX, p.fY, modi);
if (click) {
return click;
}
}
}
return this->onFindClickHandler(x, y, modi);
}
void SkView::inval(SkRect* rect) {
SkView* view = this;
SkRect storage;
for (;;) {
if (!view->isVisible()) {
return;
}
if (view->isClipToBounds()) {
SkRect bounds;
view->getLocalBounds(&bounds);
if (rect && !bounds.intersect(*rect)) {
return;
}
storage = bounds;
rect = &storage;
}
if (view->handleInval(rect)) {
return;
}
SkView* parent = view->fParent;
if (parent == NULL) {
return;
}
if (rect) {
rect->offset(view->fLoc.fX, view->fLoc.fY);
}
view = parent;
}
}
virtual bool onEvent(const SkEvent& evt) {
if (evt.isType(gReplaceTransitionEvt)) {
SkView* prev = fPrev;
prev->ref();
fPrev->detachFromParent();
fPrev = (SkView*)SkEventSink::FindSink(evt.getFast32());
(void)SampleView::SetUsePipe(fPrev, SkOSMenu::kOffState);
//attach the new fPrev and call unref to balance the ref in onDraw
this->attachChildToBack(fPrev)->unref();
this->inval(NULL);
SkASSERT(1 == prev->getRefCnt());
prev->unref();
return true;
}
if (evt.isType("transition-done")) {
fNext->setLoc(0, 0);
fNext->setClipToBounds(false);
SkEvent* evt = new SkEvent(gReplaceTransitionEvt,
this->getParent()->getSinkID());
evt->setFast32(fNext->getSinkID());
//increate ref count of fNext so it survives detachAllChildren
fNext->ref();
this->detachAllChildren();
evt->post();
return true;
}
return this->INHERITED::onEvent(evt);
}
void SkView::postInflate(const SkTDict<SkView*>& dict) {
this->onPostInflate(dict);
B2FIter iter(this);
SkView* child;
while ((child = iter.next()) != nullptr)
child->postInflate(dict);
}
void SkView::detachFromParent() {
this->validate();
SkView* parent = fParent;
if (parent) {
this->detachFromParent_NoLayout();
parent->invokeLayout();
}
}
bool SkView::setFocusView(SkView* fv)
{
SkView* view = this;
do {
if (view->onSetFocusView(fv))
return true;
} while ((view = view->fParent) != NULL);
return false;
}
const char* State::getSlideTitle(int index) const {
SkEvent evt(gTitleEvtName);
evt.setFast32(index);
{
SkView* view = fFactory[index]();
view->doQuery(&evt);
view->unref();
}
return evt.findString(gTitleEvtName);
}
SkView* SkView::sendEventToParents(const SkEvent& evt) {
SkView* parent = fParent;
while (parent) {
if (parent->doEvent(evt)) {
return parent;
}
parent = parent->fParent;
}
return nullptr;
}
SkView* SkView::moveFocus(FocusDirection dir) {
SkView* focus = this->getFocusView();
if (focus == nullptr) { // start with the root
focus = this;
while (focus->fParent) {
focus = focus->fParent;
}
}
SkView* child, *parent;
if (dir == kNext_FocusDirection) {
parent = focus;
child = focus->fFirstChild;
if (child)
goto FIRST_CHILD;
else
goto NEXT_SIB;
do {
while (child != parent->fFirstChild) {
FIRST_CHILD:
if ((focus = child->acceptFocus(dir)) != nullptr)
return focus;
child = child->fNextSibling;
}
NEXT_SIB:
child = parent->fNextSibling;
parent = parent->fParent;
} while (parent != nullptr);
} else { // prevfocus
parent = focus->fParent;
if (parent == nullptr) { // we're the root
return focus->acceptFocus(dir);
} else {
child = focus;
while (parent) {
while (child != parent->fFirstChild) {
child = child->fPrevSibling;
if ((focus = child->acceptFocus(dir)) != nullptr) {
return focus;
}
}
if (parent->acceptFocus()) {
return parent;
}
child = parent;
parent = parent->fParent;
}
}
}
return nullptr;
}
SkView* SkView::sendQueryToParents(SkEvent* evt) {
SkView* parent = fParent;
while (parent) {
if (parent->doQuery(evt)) {
return parent;
}
parent = parent->fParent;
}
return NULL;
}
SkView* SkView::sendEventToParents(const SkEvent& evt)
{
SkView* parent = fParent;
while (parent)
{
if (parent->doEvent(evt))
return parent;
parent = parent->fParent;
}
return NULL;
}
void SkFillViewLayout::onLayoutChildren(SkView* parent)
{
SkView::B2FIter iter(parent);
SkView* child;
while ((child = iter.next()) != nullptr)
{
child->setLoc(fMargin.fLeft, fMargin.fTop);
child->setSize( parent->width() - fMargin.fRight - fMargin.fLeft,
parent->height() - fMargin.fBottom - fMargin.fTop);
}
}
bool SkWindow::handleChar(SkUnichar uni) {
if (this->onHandleChar(uni))
return true;
SkView* focus = this->getFocusView();
if (focus == NULL)
focus = this;
SkEvent evt(SK_EventType_Unichar);
evt.setFast32(uni);
return focus->doEvent(evt);
}
void State::setViewport(int w, int h) {
fViewport.set(w, h);
if (fView) {
fView->setSize(SkIntToScalar(w), SkIntToScalar(h));
}
resetGpuState();
}
void SampleWindow::loadView(SkView* view) {
SkView::F2BIter iter(this);
SkView* prev = iter.next();
if (prev) {
prev->detachFromParent();
}
if (NULL == view) {
view = create_overview(fSamples.count(), fSamples.begin());
}
view->setVisibleP(true);
this->attachChildToFront(view)->unref();
view->setSize(this->width(), this->height());
this->updateTitle();
}
void SkView::DoClickUp(Click* click, int x, int y)
{
SkASSERT(click);
SkView* target = (SkView*)SkEventSink::FindSink(click->fTargetID);
if (target == NULL)
return;
click->fIPrev = click->fICurr;
click->fICurr.set(x, y);
click->fPrev = click->fCurr;
click->fCurr.iset(x, y);
target->globalToLocal(&click->fCurr);
click->fState = Click::kUp_State;
target->onClick(click);
}
void OverView::onSizeChange() {
this->detachAllChildren();
SkScalar locX = 0;
SkScalar locY = 0;
for (int i = 0; i < fCount; i++) {
SkView* view = (*fFactories[i])();
view->setVisibleP(true);
this->attachChildToBack(view)->unref();
view->setLoc(locX, locY);
view->setSize(W, H);
locX += W;
if ((i % N) == N - 1) {
locY += H;
locX = 0;
}
}
}
void SkView::draw(SkCanvas* canvas)
{
if (fWidth && fHeight && this->isVisible())
{
SkRect r;
r.set(fLoc.fX, fLoc.fY, fLoc.fX + fWidth, fLoc.fY + fHeight);
if (this->isClipToBounds() &&
canvas->quickReject(r)) {
return;
}
SkAutoCanvasRestore as(canvas, true);
if (this->isClipToBounds()) {
canvas->clipRect(r);
}
canvas->translate(fLoc.fX, fLoc.fY);
canvas->concat(fMatrix);
if (fParent) {
fParent->beforeChild(this, canvas);
}
int sc = canvas->save();
this->onDraw(canvas);
canvas->restoreToCount(sc);
if (fParent) {
fParent->afterChild(this, canvas);
}
B2FIter iter(this);
SkView* child;
SkCanvas* childCanvas = this->beforeChildren(canvas);
while ((child = iter.next()) != nullptr)
child->draw(childCanvas);
this->afterChildren(canvas);
}
}
SkView::Click* SkView::findClickHandler(SkScalar x, SkScalar y)
{
if (x < 0 || y < 0 || x >= fWidth || y >= fHeight) {
return false;
}
if (this->onSendClickToChildren(x, y)) {
F2BIter iter(this);
SkView* child;
while ((child = iter.next()) != NULL)
{
Click* click = child->findClickHandler(x - child->fLoc.fX,
y - child->fLoc.fY);
if (click) {
return click;
}
}
}
return this->onFindClickHandler(x, y);
}
bool SkWindow::handleKeyUp(SkKey key) {
if (key == kNONE_SkKey)
return false;
if (this->onHandleKeyUp(key))
return true;
//send an event to the focus-view
{
SkView* focus = this->getFocusView();
if (focus == NULL)
focus = this;
//should this one be the same?
SkEvent evt(SK_EventType_KeyUp);
evt.setFast32(key);
if (focus->doEvent(evt))
return true;
}
return false;
}
void SkView::DoClickUp(Click* click, int x, int y)
{
SkASSERT(click);
SkView* target = (SkView*)SkEventSink::FindSink(click->fTargetID);
if (NULL == target) {
return;
}
click->fIPrev = click->fICurr;
click->fICurr.set(x, y);
click->fPrev = click->fCurr;
click->fCurr.iset(x, y);
if (!target->globalToLocal(&click->fCurr)) {
// on failure pretend the mouse didn't move
click->fCurr = click->fPrev;
}
click->fState = Click::kUp_State;
target->onClick(click);
}
/* Measure the main-dimension for all the children. If a child is marked flex in that direction
ignore its current value but increment the counter for flexChildren
*/
static SkScalar compute_children_limit(SkView* parent, GetSizeProc sizeProc, int* count,
uint32_t flexMask, int* flexCount)
{
SkView::B2FIter iter(parent);
SkView* child;
SkScalar limit = 0;
int n = 0, flex = 0;
while ((child = iter.next()) != nullptr)
{
n += 1;
if (child->getFlags() & flexMask)
flex += 1;
else
limit += (child->*sizeProc)();
}
if (count)
*count = n;
if (flexCount)
*flexCount = flex;
return limit;
}
void SkView::DoClickDown(Click* click, int x, int y)
{
SkASSERT(click);
SkView* target = (SkView*)SkEventSink::FindSink(click->fTargetID);
if (NULL == target) {
return;
}
click->fIOrig.set(x, y);
click->fICurr = click->fIPrev = click->fIOrig;
click->fOrig.iset(x, y);
if (!target->globalToLocal(&click->fOrig)) {
// no history to let us recover from this failure
return;
}
click->fPrev = click->fCurr = click->fOrig;
click->fState = Click::kDown_State;
target->onClick(click);
}
SkView* SkViewInflate::inflate(const SkDOM& dom, const SkDOM::Node* node, SkView* root)
{
fIDs.reset();
if (root == NULL)
{
root = this->createView(dom, node);
if (root == NULL)
{
printf("createView returned NULL on <%s>\n", dom.getName(node));
return NULL;
}
}
this->rInflate(dom, node, root);
// resolve listeners and broadcasters
{
SkView* target;
const IDStr* iter = fListenTo.begin();
const IDStr* stop = fListenTo.end();
for (; iter < stop; iter++)
{
if (fIDs.find(iter->fStr, &target))
target->addListenerID(iter->fView->getSinkID());
}
iter = fBroadcastTo.begin();
stop = fBroadcastTo.end();
for (; iter < stop; iter++)
{
if (fIDs.find(iter->fStr, &target))
iter->fView->addListenerID(target->getSinkID());
}
}
// now that the tree is built, give everyone a shot at the ID dict
root->postInflate(fIDs);
return root;
}
void SkView::DoClickMoved(Click* click, int x, int y, unsigned modi) {
SkASSERT(click);
SkView* target = (SkView*)SkEventSink::FindSink(click->fTargetID);
if (nullptr == target) {
return;
}
click->fIPrev = click->fICurr;
click->fICurr.set(x, y);
click->fPrev = click->fCurr;
click->fCurr.iset(x, y);
if (!target->globalToLocal(&click->fCurr)) {
// on failure pretend the mouse didn't move
click->fCurr = click->fPrev;
}
click->fState = Click::kMoved_State;
click->fModifierKeys = modi;
target->onClick(click);
}
void SkView::draw(SkCanvas* canvas)
{
if (fWidth && fHeight && this->isVisible())
{
SkRect r;
r.set(fLoc.fX, fLoc.fY, fLoc.fX + fWidth, fLoc.fY + fHeight);
if (canvas->quickReject(r, SkCanvas::kBW_EdgeType))
return;
SkAutoCanvasRestore as(canvas, true);
canvas->clipRect(r);
canvas->translate(fLoc.fX, fLoc.fY);
if (fParent) {
fParent->beforeChild(this, canvas);
}
int sc = canvas->save();
this->onDraw(canvas);
canvas->restoreToCount(sc);
if (fParent) {
fParent->afterChild(this, canvas);
}
B2FIter iter(this);
SkView* child;
SkCanvas* childCanvas = this->beforeChildren(canvas);
while ((child = iter.next()) != NULL)
child->draw(childCanvas);
this->afterChildren(canvas);
}
}
void SkStackViewLayout::onLayoutChildren(SkView* parent)
{
static AlignProc gAlignProcs[] = {
left_align_proc,
center_align_proc,
right_align_proc,
fill_align_proc
};
SkScalar startM, endM, crossStartM, crossLimit;
GetSizeProc mainGetSizeP, crossGetSizeP;
SetLocProc mainLocP, crossLocP;
SetSizeProc mainSetSizeP, crossSetSizeP;
SkView::Flag_Mask flexMask;
if (fOrient == kHorizontal_Orient)
{
startM = fMargin.fLeft;
endM = fMargin.fRight;
crossStartM = fMargin.fTop;
crossLimit = -fMargin.fTop - fMargin.fBottom;
mainGetSizeP = &SkView::width;
crossGetSizeP = &SkView::height;
mainLocP = &SkView::setLocX;
crossLocP = &SkView::setLocY;
mainSetSizeP = &SkView::setWidth;
crossSetSizeP = &SkView::setHeight;
flexMask = SkView::kFlexH_Mask;
}
else
{
startM = fMargin.fTop;
endM = fMargin.fBottom;
crossStartM = fMargin.fLeft;
crossLimit = -fMargin.fLeft - fMargin.fRight;
mainGetSizeP = &SkView::height;
crossGetSizeP = &SkView::width;
mainLocP = &SkView::setLocY;
crossLocP = &SkView::setLocX;
mainSetSizeP = &SkView::setHeight;
crossSetSizeP = &SkView::setWidth;
flexMask = SkView::kFlexV_Mask;
}
crossLimit += (parent->*crossGetSizeP)();
if (fAlign != kStretch_Align)
crossSetSizeP = nullptr;
int childCount, flexCount;
SkScalar childLimit = compute_children_limit(parent, mainGetSizeP, &childCount, flexMask, &flexCount);
if (childCount == 0)
return;
childLimit += (childCount - 1) * fSpacer;
SkScalar parentLimit = (parent->*mainGetSizeP)() - startM - endM;
SkScalar pos = startM + gAlignProcs[fPack](childLimit, parentLimit);
SkScalar flexAmount = 0;
SkView::B2FIter iter(parent);
SkView* child;
if (flexCount > 0 && parentLimit > childLimit)
flexAmount = (parentLimit - childLimit) / flexCount;
while ((child = iter.next()) != nullptr)
{
if (fRound)
pos = SkScalarRoundToScalar(pos);
(child->*mainLocP)(pos);
SkScalar crossLoc = crossStartM + gAlignProcs[fAlign]((child->*crossGetSizeP)(), crossLimit);
if (fRound)
crossLoc = SkScalarRoundToScalar(crossLoc);
(child->*crossLocP)(crossLoc);
if (crossSetSizeP)
(child->*crossSetSizeP)(crossLimit);
if (child->getFlags() & flexMask)
(child->*mainSetSizeP)(flexAmount);
pos += (child->*mainGetSizeP)() + fSpacer;
}
}