void
KeyboardLayoutView::Draw(BRect updateRect)
{
if (fOldSize != BSize(Bounds().Width(), Bounds().Height())) {
_InitOffscreen();
_LayoutKeyboard();
}
BView* view;
if (fOffscreenBitmap != NULL) {
view = fOffscreenView;
view->LockLooper();
} else
view = this;
// Draw background
if (Parent())
view->SetLowColor(Parent()->ViewColor());
else
view->SetLowColor(ui_color(B_PANEL_BACKGROUND_COLOR));
view->FillRect(updateRect, B_SOLID_LOW);
// Draw keys
for (int32 i = 0; i < fLayout->CountKeys(); i++) {
Key* key = fLayout->KeyAt(i);
_DrawKey(view, updateRect, key, _FrameFor(key),
_IsKeyPressed(key->code));
}
// Draw LED indicators
for (int32 i = 0; i < fLayout->CountIndicators(); i++) {
Indicator* indicator = fLayout->IndicatorAt(i);
_DrawIndicator(view, updateRect, indicator, _FrameFor(indicator->frame),
(fModifiers & indicator->modifier) != 0);
}
if (fOffscreenBitmap != NULL) {
view->Sync();
view->UnlockLooper();
DrawBitmapAsync(fOffscreenBitmap, BPoint(0, 0));
}
}
void
CharacterView::ScrollToCharacter(uint32 c)
{
if (IsCharacterVisible(c))
return;
BRect frame = _FrameFor(c);
BView::ScrollTo(0.0f, frame.top);
}
bool
CharacterView::IsCharacterVisible(uint32 c) const
{
return Bounds().Contains(_FrameFor(c));
}
void
KeyboardLayoutView::_InvalidateKey(const Key* key)
{
if (key != NULL)
Invalidate(_FrameFor(key));
}
void
KeyboardLayoutView::MouseMoved(BPoint point, uint32 transit,
const BMessage* dragMessage)
{
if (fKeymap == NULL)
return;
// prevent dragging for tertiary mouse button
if ((fButtons & B_TERTIARY_MOUSE_BUTTON) != 0)
return;
if (dragMessage != NULL) {
if (fEditable) {
_InvalidateKey(fDropTarget);
fDropPoint = point;
_EvaluateDropTarget(point);
}
return;
}
int32 buttons;
if (Window()->CurrentMessage() == NULL
|| Window()->CurrentMessage()->FindInt32("buttons", &buttons) != B_OK
|| buttons == 0)
return;
if (fDragKey == NULL && (fabs(point.x - fClickPoint.x) > 4
|| fabs(point.y - fClickPoint.y) > 4)) {
// start dragging
Key* key = _KeyAt(fClickPoint);
if (key == NULL)
return;
BRect frame = _FrameFor(key);
BPoint offset = fClickPoint - frame.LeftTop();
frame.OffsetTo(B_ORIGIN);
BRect rect = frame;
rect.right--;
rect.bottom--;
BBitmap* bitmap = new BBitmap(rect, B_RGBA32, true);
bitmap->Lock();
BView* view = new BView(rect, "drag", B_FOLLOW_NONE, 0);
bitmap->AddChild(view);
view->SetHighColor(0, 0, 0, 0);
view->FillRect(view->Bounds());
view->SetDrawingMode(B_OP_ALPHA);
view->SetHighColor(0, 0, 0, 128);
// set the level of transparency by value
view->SetBlendingMode(B_CONSTANT_ALPHA, B_ALPHA_COMPOSITE);
_DrawKey(view, frame, key, frame, false);
view->Sync();
bitmap->Unlock();
BMessage drag(B_MIME_DATA);
drag.AddInt32("key", key->code);
char* string;
int32 numBytes;
fKeymap->GetChars(key->code, fModifiers, fDeadKey, &string,
&numBytes);
if (string != NULL) {
drag.AddData("text/plain", B_MIME_DATA, string, numBytes);
delete[] string;
}
DragMessage(&drag, bitmap, B_OP_ALPHA, offset);
fDragKey = key;
fDragModifiers = fModifiers;
fKeyState[key->code / 8] &= ~(1 << (7 - (key->code & 7)));
_InvalidateKey(key);
}
}
