* Copyright 2014, Stephan Aßmus <superstippi@gmx.de>.
* All rights reserved. Distributed under the terms of the MIT License.
*/
#include "LinkView.h"
#include <Cursor.h>
#include <String.h>
LinkView::LinkView(const char* name, const char* string, BMessage* message)
:
BStringView(name, string),
BInvoker(message, NULL),
fEnabled(true),
fMouseInside(false)
{
SetExplicitMaxSize(BSize(B_SIZE_UNLIMITED, B_SIZE_UNSET));
SetExplicitMinSize(BSize(120, B_SIZE_UNSET));
}
void
LinkView::AttachedToWindow()
{
_UpdateLinkColor();
}
void
LinkView::MouseMoved(BPoint where, uint32 transit, const BMessage* dragMessage)
{
if (transit == B_ENTERED_VIEW) {
fMouseInside = true;
_UpdateLinkColor();
} else if (transit == B_EXITED_VIEW) {
fMouseInside = false;
_UpdateLinkColor();
}
}
void
LinkView::MouseDown(BPoint where)
{
if (fEnabled)
Invoke(Message());
}
void
LinkView::Draw(BRect updateRect)
{
if (Text() == NULL)
return;
SetDrawingMode(B_OP_ALPHA);
font_height fontHeight;
GetFontHeight(&fontHeight);
BRect bounds = Bounds();
float y = (bounds.top + bounds.bottom - ceilf(fontHeight.ascent)
- ceilf(fontHeight.descent)) / 2.0 + ceilf(fontHeight.ascent);
float x = 0.0f;
BString text(Text());
TruncateString(&text, B_TRUNCATE_END, bounds.Width());
DrawString(text, BPoint(x, y));
}
void
LinkView::SetEnabled(bool enabled)
{
if (fEnabled != enabled) {
fEnabled = enabled;
_UpdateLinkColor();
}
}
void
LinkView::MessageReceived(BMessage* message)
{
if (message->what == B_COLORS_UPDATED)
_UpdateLinkColor();
BStringView::MessageReceived(message);
}
void
LinkView::_UpdateLinkColor()
{
BCursorID cursorID = B_CURSOR_ID_SYSTEM_DEFAULT;
float tint = B_DARKEN_1_TINT;
ViewUIColor(&tint);
if (fEnabled) {
if (fMouseInside) {
cursorID = B_CURSOR_ID_FOLLOW_LINK;
SetHighUIColor(B_LINK_HOVER_COLOR, tint);
} else
SetHighUIColor(B_LINK_TEXT_COLOR, tint);
} else
SetHighColor(disable_color(ui_color(B_LINK_TEXT_COLOR), ViewColor()));
BCursor cursor(cursorID);
SetViewCursor(&cursor, true);
Invalidate();
}
