MsgRouting
AwtScrollbar::HandleEvent(MSG *msg, BOOL synthetic)
{
if (msg->message == WM_LBUTTONDOWN || msg->message == WM_LBUTTONDBLCLK) {
if (IsFocusable() && AwtComponent::sm_focusOwner != GetHWnd()) {
JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
jobject target = GetTarget(env);
env->CallStaticVoidMethod
(AwtKeyboardFocusManager::keyboardFocusManagerCls,
AwtKeyboardFocusManager::heavyweightButtonDownMID,
target, ((jlong)msg->time) & 0xFFFFFFFF);
env->DeleteLocalRef(target);
AwtSetFocus();
}
// Left button press was already routed to default window
// procedure in the WmMouseDown above. Propagating synthetic
// press seems like a bad idea as internal message loop
// doesn't know how to unwrap synthetic release.
delete msg;
return mrConsume;
}
else {
return AwtComponent::HandleEvent(msg, synthetic);
}
}
// Work around a windows bug descrbed in KB article Q73839. Reset
// focus on scrollbars to update focus indicator. The article advises
// to disable/enable the scrollbar.
void
AwtScrollbar::UpdateFocusIndicator()
{
if (IsFocusable()) {
// todo: doesn't work
SendMessage((WPARAM)ESB_DISABLE_BOTH);
SendMessage((WPARAM)ESB_ENABLE_BOTH);
}
}
void STabCtrl::OnPaint(IRenderTarget *pRT)
{
SPainter painter;
BeforePaint(pRT,painter);
CRect rcItem,rcItemPrev;
CRect rcSplit;
DWORD dwState;
CRect rcTitle=GetTitleRect();
pRT->PushClipRect(&rcTitle,RGN_AND);
for(size_t i=0; i<GetItemCount(); i++)
{
dwState=WndState_Normal;
if(i == m_nCurrentPage) dwState=WndState_PushDown;
else if(i== m_nHoverTabItem) dwState=WndState_Hover;
GetItemRect(i,rcItem);
//画分隔线
if(i>0 && m_pSkinTabInter)
{
rcSplit=rcItem;
if(m_nTabAlign==AlignLeft)
{
rcSplit.top=rcItemPrev.bottom;
rcSplit.bottom = rcSplit.top + m_nTabInterSize;
}
else
{
rcSplit.left=rcItemPrev.right;
rcSplit.right=rcSplit.left + m_nTabInterSize;
}
m_pSkinTabInter->Draw(pRT,rcSplit,0);
}
DrawItem(pRT,rcItem,i,dwState);
rcItemPrev=rcItem;
}
pRT->PopClip();
if (m_pSkinFrame)
{
CRect rcPage = GetChildrenLayoutRect();
m_pSkinFrame->Draw(pRT, rcPage, WndState_Normal);
}
if(IsFocused() && IsFocusable() && m_bDrawFocusRect)
{
CRect rc;
GetItemRect(m_nCurrentPage,rc);
rc.DeflateRect(2,2);
DrawDefFocusRect(pRT,&rc);
}
AfterPaint(pRT,painter);
}
// Work around a windows bug descrbed in KB article Q73839. Reset
// focus on scrollbars to update focus indicator. The article advises
// to disable/enable the scrollbar, but simply resetting the focus is
// sufficient.
void
AwtScrollbar::UpdateFocusIndicator()
{
if (IsFocusable()) {
m_ignoreFocusEvents = TRUE;
::SetFocus(NULL);
AwtSetFocus();
m_ignoreFocusEvents = FALSE;
}
}
gfx::Insets Label::GetInsets() const
{
gfx::Insets insets = View::GetInsets();
if(IsFocusable() || has_focus_border_)
{
insets += gfx::Insets(kFocusBorderPadding, kFocusBorderPadding,
kFocusBorderPadding, kFocusBorderPadding);
}
return insets;
}
void Widget::LoadStyle(const std::string& style)
{
ResourceManager* rm = ResourceManager::Get();
StyleProperties& properties = rm->GetStyle(style);
if (properties["from"] != "")
LoadStyle(properties["from"]);
SetX(rm->GetValue(properties["x"], GetPosition().x));
SetY(rm->GetValue(properties["y"], GetPosition().y));
mAlignOffset.x = rm->GetValue(properties["x"], mAlignOffset.x);
mAlignOffset.y = rm->GetValue(properties["y"], mAlignOffset.y);
SetWidth(rm->GetValue(properties["width"], GetWidth()));
SetHeight(rm->GetValue(properties["height"], GetHeight()));
// Detect alignement
if (properties["align"] != "")
{
std::string strA = properties["align"];
if (strA == "top_left")
mAlign = Align::TOP_LEFT;
else if (strA == "top_center")
mAlign = Align::TOP_CENTER;
else if (strA == "top_right")
mAlign = Align::TOP_RIGHT;
else if (strA == "left")
mAlign = Align::LEFT;
else if (strA == "center")
mAlign = Align::CENTER;
else if (strA == "right")
mAlign = Align::RIGHT;
else if (strA == "bottom_left")
mAlign = Align::BOTTOM_LEFT;
else if (strA == "bottom_center")
mAlign = Align::BOTTOM_CENTER;
else if (strA == "bottom_right")
mAlign = Align::BOTTOM_RIGHT;
else
mAlign = Align::NONE;
}
SetColor(rm->GetColorValue(properties["color"], GetColor()));
SetBorderColor(rm->GetColorValue(properties["borderColor"], GetBorderColor()));
SetEnabled(rm->GetValue(properties["enabled"], IsEnabled()));
SetVisible(rm->GetValue(properties["visible"], IsVisible()));
SetFocusable(rm->GetValue(properties["focusable"], IsFocusable()));
UpdatePosition();
}
void SCaption::OnLButtonDown( UINT nFlags, CPoint point )
{
if(IsFocusable()) SetFocus();
HWND hHost=GetContainer()->GetHostHwnd();
if (WS_MAXIMIZE == (GetWindowLong(hHost,GWL_STYLE) & WS_MAXIMIZE))
{
m_bIsMaxDown = TRUE;
return;
}
::SendMessage(hHost,WM_SYSCOMMAND, SC_MOVE | HTCAPTION,0);
}
MsgRouting AwtCheckbox::HandleEvent(MSG *msg, BOOL synthetic)
{
if (IsFocusable() && AwtComponent::sm_focusOwner != GetHWnd() &&
(msg->message == WM_LBUTTONDOWN || msg->message == WM_LBUTTONDBLCLK))
{
JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
jobject target = GetTarget(env);
env->CallStaticVoidMethod
(AwtKeyboardFocusManager::keyboardFocusManagerCls,
AwtKeyboardFocusManager::heavyweightButtonDownMID,
target, ((jlong)msg->time) & 0xFFFFFFFF);
env->DeleteLocalRef(target);
}
return AwtComponent::HandleEvent(msg, synthetic);
}
// Strategy for finding the previous focusable view:
// - keep going down on the right until you reach a view with no children, if it
// it is a good candidate return it.
// - start the search on the left sibling.
// - if there are no left sibling, start the search on the parent (without going
// down).
View* FocusSearch::FindPreviousFocusableViewImpl(
View* starting_view,
bool check_starting_view,
bool can_go_up,
bool can_go_down,
int skip_group_id,
FocusTraversable** focus_traversable,
View** focus_traversable_view)
{
// Let's go down and right as much as we can.
if(can_go_down)
{
// Before we go into the direct children, we have to check if this view has
// a FocusTraversable.
*focus_traversable = starting_view->GetFocusTraversable();
if(*focus_traversable)
{
*focus_traversable_view = starting_view;
return NULL;
}
if(starting_view->GetChildViewCount() > 0)
{
View* view = starting_view->GetChildViewAt(
starting_view->GetChildViewCount()-1);
View* v = FindPreviousFocusableViewImpl(view,
true, false, true,
skip_group_id,
focus_traversable,
focus_traversable_view);
if(v || *focus_traversable)
{
return v;
}
}
}
// Then look at this view. Here, we do not need to see if the view has
// a FocusTraversable, since we do not want to go down any more.
if(check_starting_view &&
IsViewFocusableCandidate(starting_view, skip_group_id))
{
View* v = FindSelectedViewForGroup(starting_view);
// The selected view might not be focusable (if it is disabled for
// example).
if(IsFocusable(v))
{
return v;
}
}
// Then try the left sibling.
View* sibling = starting_view->GetPreviousFocusableView();
if(sibling)
{
return FindPreviousFocusableViewImpl(sibling,
true, true, true,
skip_group_id,
focus_traversable,
focus_traversable_view);
}
// Then go up the parent.
if(can_go_up)
{
View* parent = GetParent(starting_view);
if(parent)
{
return FindPreviousFocusableViewImpl(parent,
true, true, false,
skip_group_id,
focus_traversable,
focus_traversable_view);
}
}
// We found nothing.
return NULL;
}
// Strategy for finding the next focusable view:
// - keep going down the first child, stop when you find a focusable view or
// a focus traversable view (in that case return it) or when you reach a view
// with no children.
// - go to the right sibling and start the search from there (by invoking
// FindNextFocusableViewImpl on that view).
// - if the view has no right sibling, go up the parents until you find a parent
// with a right sibling and start the search from there.
View* FocusSearch::FindNextFocusableViewImpl(
View* starting_view,
bool check_starting_view,
bool can_go_up,
bool can_go_down,
int skip_group_id,
FocusTraversable** focus_traversable,
View** focus_traversable_view)
{
if(check_starting_view)
{
if(IsViewFocusableCandidate(starting_view, skip_group_id))
{
View* v = FindSelectedViewForGroup(starting_view);
// The selected view might not be focusable (if it is disabled for
// example).
if(IsFocusable(v))
{
return v;
}
}
*focus_traversable = starting_view->GetFocusTraversable();
if(*focus_traversable)
{
*focus_traversable_view = starting_view;
return NULL;
}
}
// First let's try the left child.
if(can_go_down)
{
if(starting_view->GetChildViewCount() > 0)
{
View* v = FindNextFocusableViewImpl(starting_view->GetChildViewAt(0),
true, false, true, skip_group_id,
focus_traversable,
focus_traversable_view);
if(v || *focus_traversable)
{
return v;
}
}
}
// Then try the right sibling.
View* sibling = starting_view->GetNextFocusableView();
if(sibling)
{
View* v = FindNextFocusableViewImpl(sibling,
true, false, true, skip_group_id,
focus_traversable,
focus_traversable_view);
if(v || *focus_traversable)
{
return v;
}
}
// Then go up to the parent sibling.
if(can_go_up)
{
View* parent = GetParent(starting_view);
while(parent)
{
sibling = parent->GetNextFocusableView();
if(sibling)
{
return FindNextFocusableViewImpl(sibling,
true, true, true,
skip_group_id,
focus_traversable,
focus_traversable_view);
}
parent = GetParent(parent);
}
}
// We found nothing.
return NULL;
}
View* FocusSearch::FindNextFocusableView(View* starting_view,
bool reverse,
Direction direction,
bool check_starting_view,
FocusTraversable** focus_traversable,
View** focus_traversable_view)
{
*focus_traversable = NULL;
*focus_traversable_view = NULL;
if(root_->GetChildViewCount() == 0)
{
NOTREACHED();
// Nothing to focus on here.
return NULL;
}
View* initial_starting_view = starting_view;
int starting_view_group = -1;
if(starting_view)
{
starting_view_group = starting_view->GetGroup();
}
if(!starting_view)
{
// Default to the first/last child
starting_view = reverse ? root_->GetChildViewAt(
root_->GetChildViewCount()-1) : root_->GetChildViewAt(0);
// If there was no starting view, then the one we select is a potential
// focus candidate.
check_starting_view = true;
}
else
{
// The starting view should be a direct or indirect child of the root.
DCHECK(root_->IsParentOf(starting_view));
}
View* v = NULL;
if(!reverse)
{
v = FindNextFocusableViewImpl(starting_view,
check_starting_view,
true,
(direction == DOWN) ? true : false,
starting_view_group,
focus_traversable,
focus_traversable_view);
}
else
{
// If the starting view is focusable, we don't want to go down, as we are
// traversing the view hierarchy tree bottom-up.
bool can_go_down = (direction == DOWN) && !IsFocusable(starting_view);
v = FindPreviousFocusableViewImpl(starting_view,
check_starting_view,
true,
can_go_down,
starting_view_group,
focus_traversable,
focus_traversable_view);
}
// Don't set the focus to something outside of this view hierarchy.
if(v && v!=root_ && !root_->IsParentOf(v))
{
v = NULL;
}
// If |cycle_| is true, prefer to keep cycling rather than returning NULL.
if(cycle_ && !v && initial_starting_view)
{
v = FindNextFocusableView(NULL, reverse, direction, check_starting_view,
focus_traversable, focus_traversable_view);
DCHECK(IsFocusable(v));
return v;
}
// Doing some sanity checks.
if(v)
{
DCHECK(IsFocusable(v));
return v;
}
if(*focus_traversable)
{
DCHECK(*focus_traversable_view);
return NULL;
}
// Nothing found.
return NULL;
}
bool FocusSearch::IsViewFocusableCandidate(View* v, int skip_group_id)
{
return IsFocusable(v) &&
(v->IsGroupFocusTraversable() || skip_group_id==-1 ||
v->GetGroup()!=skip_group_id);
}
MsgRouting
AwtTextField::HandleEvent(MSG *msg, BOOL synthetic)
{
MsgRouting returnVal;
/*
* RichEdit 1.0 control starts internal message loop if the
* left mouse button is pressed while the cursor is not over
* the current selection or the current selection is empty.
* Because of this we don't receive WM_MOUSEMOVE messages
* while the left mouse button is pressed. To work around
* this behavior we process the relevant mouse messages
* by ourselves.
* By consuming WM_MOUSEMOVE messages we also don't give
* the RichEdit control a chance to recognize a drag gesture
* and initiate its own drag-n-drop operation.
*/
/**
* In non-focusable mode we don't pass mouse messages to native window thus making user unable
* to select the text. Below is the code from awt_TextArea.cpp which implements selection
* functionality. For safety this code is only being executed in non-focusable mode.
*/
if (!IsFocusable()) {
if (msg->message == WM_LBUTTONDOWN || msg->message == WM_LBUTTONDBLCLK) {
CHARRANGE cr;
LONG lCurPos = EditGetCharFromPos(msg->pt);
EditGetSel(cr);
/*
* NOTE: Plain EDIT control always clears selection on mouse
* button press. We are clearing the current selection only if
* the mouse pointer is not over the selected region.
* In this case we sacrifice backward compatibility
* to allow dnd of the current selection.
*/
if (msg->message == WM_LBUTTONDBLCLK) {
SetStartSelectionPos(static_cast<LONG>(SendMessage(
EM_FINDWORDBREAK, WB_MOVEWORDLEFT, lCurPos)));
SetEndSelectionPos(static_cast<LONG>(SendMessage(
EM_FINDWORDBREAK, WB_MOVEWORDRIGHT, lCurPos)));
} else {
SetStartSelectionPos(lCurPos);
SetEndSelectionPos(lCurPos);
}
cr.cpMin = GetStartSelectionPos();
cr.cpMax = GetEndSelectionPos();
EditSetSel(cr);
delete msg;
return mrConsume;
} else if (msg->message == WM_LBUTTONUP) {
/*
* If the left mouse button is pressed on the selected region
* we don't clear the current selection. We clear it on button
* release instead. This is to allow dnd of the current selection.
*/
if (GetStartSelectionPos() == -1 && GetEndSelectionPos() == -1) {
CHARRANGE cr;
LONG lCurPos = EditGetCharFromPos(msg->pt);
cr.cpMin = lCurPos;
cr.cpMax = lCurPos;
EditSetSel(cr);
}
/*
* Cleanup the state variables when left mouse button is released.
* These state variables are designed to reflect the selection state
* while the left mouse button is pressed and be set to -1 otherwise.
*/
SetStartSelectionPos(-1);
SetEndSelectionPos(-1);
SetLastSelectionPos(-1);
delete msg;
return mrConsume;
} else if (msg->message == WM_MOUSEMOVE && (msg->wParam & MK_LBUTTON)) {
/*
* We consume WM_MOUSEMOVE while the left mouse button is pressed,
* so we have to simulate autoscrolling when mouse is moved outside
* of the client area.
*/
POINT p;
RECT r;
BOOL bScrollLeft = FALSE;
BOOL bScrollRight = FALSE;
BOOL bScrollUp = FALSE;
BOOL bScrollDown = FALSE;
p.x = msg->pt.x;
p.y = msg->pt.y;
VERIFY(::GetClientRect(GetHWnd(), &r));
if (p.x < 0) {
bScrollLeft = TRUE;
p.x = 0;
} else if (p.x > r.right) {
bScrollRight = TRUE;
p.x = r.right - 1;
}
LONG lCurPos = EditGetCharFromPos(p);
if (GetStartSelectionPos() != -1 &&
GetEndSelectionPos() != -1 &&
lCurPos != GetLastSelectionPos()) {
CHARRANGE cr;
SetLastSelectionPos(lCurPos);
cr.cpMin = GetStartSelectionPos();
cr.cpMax = GetLastSelectionPos();
EditSetSel(cr);
}
if (bScrollLeft == TRUE || bScrollRight == TRUE) {
SCROLLINFO si;
memset(&si, 0, sizeof(si));
si.cbSize = sizeof(si);
si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE;
VERIFY(::GetScrollInfo(GetHWnd(), SB_HORZ, &si));
if (bScrollLeft == TRUE) {
si.nPos = si.nPos - si.nPage / 2;
si.nPos = max(si.nMin, si.nPos);
} else if (bScrollRight == TRUE) {
si.nPos = si.nPos + si.nPage / 2;
si.nPos = min(si.nPos, si.nMax);
}
/*
* Okay to use 16-bit position since RichEdit control adjusts
* its scrollbars so that their range is always 16-bit.
*/
DASSERT(abs(si.nPos) < 0x8000);
SendMessage(WM_HSCROLL,
MAKEWPARAM(SB_THUMBPOSITION, LOWORD(si.nPos)));
}
delete msg;
return mrConsume;
}
}
/*
* Store the 'synthetic' parameter so that the WM_PASTE security check
* happens only for synthetic events.
*/
m_synthetic = synthetic;
returnVal = AwtComponent::HandleEvent(msg, synthetic);
m_synthetic = FALSE;
return returnVal;
}
