mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-14 00:14:18 +00:00
456 lines
12 KiB
C++
456 lines
12 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library - "Jules' Utility Class Extensions"
|
|
Copyright 2004-9 by Raw Material Software Ltd.
|
|
|
|
------------------------------------------------------------------------------
|
|
|
|
JUCE can be redistributed and/or modified under the terms of the GNU General
|
|
Public License (Version 2), as published by the Free Software Foundation.
|
|
A copy of the license is included in the JUCE distribution, or can be found
|
|
online at www.gnu.org/licenses.
|
|
|
|
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
|
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
|
|
|
------------------------------------------------------------------------------
|
|
|
|
To release a closed-source product which uses JUCE, commercial licenses are
|
|
available: visit www.rawmaterialsoftware.com/juce for more information.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
#include "../../../core/juce_StandardHeader.h"
|
|
|
|
BEGIN_JUCE_NAMESPACE
|
|
|
|
#include "juce_Label.h"
|
|
#include "../lookandfeel/juce_LookAndFeel.h"
|
|
|
|
|
|
//==============================================================================
|
|
Label::Label (const String& componentName,
|
|
const String& labelText)
|
|
: Component (componentName),
|
|
text (labelText),
|
|
font (15.0f),
|
|
justification (Justification::centredLeft),
|
|
listeners (2),
|
|
ownerComponent (0),
|
|
horizontalBorderSize (3),
|
|
verticalBorderSize (1),
|
|
minimumHorizontalScale (0.7f),
|
|
editSingleClick (false),
|
|
editDoubleClick (false),
|
|
lossOfFocusDiscardsChanges (false)
|
|
{
|
|
setColour (TextEditor::textColourId, Colours::black);
|
|
setColour (TextEditor::backgroundColourId, Colours::transparentBlack);
|
|
setColour (TextEditor::outlineColourId, Colours::transparentBlack);
|
|
}
|
|
|
|
Label::~Label()
|
|
{
|
|
if (ownerComponent != 0 && ! deletionWatcher->hasBeenDeleted())
|
|
ownerComponent->removeComponentListener (this);
|
|
|
|
editor = 0;
|
|
}
|
|
|
|
//==============================================================================
|
|
void Label::setText (const String& newText,
|
|
const bool broadcastChangeMessage)
|
|
{
|
|
hideEditor (true);
|
|
|
|
if (text != newText)
|
|
{
|
|
text = newText;
|
|
repaint();
|
|
|
|
textWasChanged();
|
|
|
|
if (ownerComponent != 0 && ! deletionWatcher->hasBeenDeleted())
|
|
componentMovedOrResized (*ownerComponent, true, true);
|
|
|
|
if (broadcastChangeMessage)
|
|
callChangeListeners();
|
|
}
|
|
}
|
|
|
|
const String Label::getText (const bool returnActiveEditorContents) const throw()
|
|
{
|
|
return (returnActiveEditorContents && isBeingEdited())
|
|
? editor->getText()
|
|
: text;
|
|
}
|
|
|
|
void Label::setFont (const Font& newFont) throw()
|
|
{
|
|
font = newFont;
|
|
repaint();
|
|
}
|
|
|
|
const Font& Label::getFont() const throw()
|
|
{
|
|
return font;
|
|
}
|
|
|
|
void Label::setEditable (const bool editOnSingleClick,
|
|
const bool editOnDoubleClick,
|
|
const bool lossOfFocusDiscardsChanges_) throw()
|
|
{
|
|
editSingleClick = editOnSingleClick;
|
|
editDoubleClick = editOnDoubleClick;
|
|
lossOfFocusDiscardsChanges = lossOfFocusDiscardsChanges_;
|
|
|
|
setWantsKeyboardFocus (editOnSingleClick || editOnDoubleClick);
|
|
setFocusContainer (editOnSingleClick || editOnDoubleClick);
|
|
}
|
|
|
|
void Label::setJustificationType (const Justification& justification_) throw()
|
|
{
|
|
justification = justification_;
|
|
repaint();
|
|
}
|
|
|
|
void Label::setBorderSize (int h, int v)
|
|
{
|
|
horizontalBorderSize = h;
|
|
verticalBorderSize = v;
|
|
repaint();
|
|
}
|
|
|
|
//==============================================================================
|
|
void Label::attachToComponent (Component* owner,
|
|
const bool onLeft)
|
|
{
|
|
if (ownerComponent != 0 && ! deletionWatcher->hasBeenDeleted())
|
|
ownerComponent->removeComponentListener (this);
|
|
|
|
deletionWatcher = 0;
|
|
ownerComponent = owner;
|
|
|
|
leftOfOwnerComp = onLeft;
|
|
|
|
if (ownerComponent != 0)
|
|
{
|
|
deletionWatcher = new ComponentDeletionWatcher (owner);
|
|
|
|
setVisible (owner->isVisible());
|
|
ownerComponent->addComponentListener (this);
|
|
componentParentHierarchyChanged (*ownerComponent);
|
|
componentMovedOrResized (*ownerComponent, true, true);
|
|
}
|
|
}
|
|
|
|
void Label::componentMovedOrResized (Component& component,
|
|
bool /*wasMoved*/,
|
|
bool /*wasResized*/)
|
|
{
|
|
if (leftOfOwnerComp)
|
|
{
|
|
setSize (jmin (getFont().getStringWidth (text) + 8, component.getX()),
|
|
component.getHeight());
|
|
|
|
setTopRightPosition (component.getX(), component.getY());
|
|
}
|
|
else
|
|
{
|
|
setSize (component.getWidth(),
|
|
8 + roundFloatToInt (getFont().getHeight()));
|
|
|
|
setTopLeftPosition (component.getX(), component.getY() - getHeight());
|
|
}
|
|
}
|
|
|
|
void Label::componentParentHierarchyChanged (Component& component)
|
|
{
|
|
if (component.getParentComponent() != 0)
|
|
component.getParentComponent()->addChildComponent (this);
|
|
}
|
|
|
|
void Label::componentVisibilityChanged (Component& component)
|
|
{
|
|
setVisible (component.isVisible());
|
|
}
|
|
|
|
//==============================================================================
|
|
void Label::textWasEdited()
|
|
{
|
|
}
|
|
|
|
void Label::textWasChanged()
|
|
{
|
|
}
|
|
|
|
void Label::showEditor()
|
|
{
|
|
if (editor == 0)
|
|
{
|
|
addAndMakeVisible (editor = createEditorComponent());
|
|
editor->setText (getText(), false);
|
|
editor->addListener (this);
|
|
editor->grabKeyboardFocus();
|
|
editor->setHighlightedRegion (0, text.length());
|
|
editor->addListener (this);
|
|
|
|
resized();
|
|
repaint();
|
|
|
|
editorShown (editor);
|
|
|
|
enterModalState();
|
|
editor->grabKeyboardFocus();
|
|
}
|
|
}
|
|
|
|
void Label::editorShown (TextEditor* editorComponent)
|
|
{
|
|
}
|
|
|
|
void Label::editorAboutToBeHidden (TextEditor* editorComponent)
|
|
{
|
|
}
|
|
|
|
bool Label::updateFromTextEditorContents()
|
|
{
|
|
jassert (editor != 0);
|
|
const String newText (editor->getText());
|
|
|
|
if (text != newText)
|
|
{
|
|
text = newText;
|
|
repaint();
|
|
|
|
textWasChanged();
|
|
|
|
if (ownerComponent != 0 && ! deletionWatcher->hasBeenDeleted())
|
|
componentMovedOrResized (*ownerComponent, true, true);
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void Label::hideEditor (const bool discardCurrentEditorContents)
|
|
{
|
|
if (editor != 0)
|
|
{
|
|
editorAboutToBeHidden (editor);
|
|
|
|
const bool changed = (! discardCurrentEditorContents)
|
|
&& updateFromTextEditorContents();
|
|
|
|
editor = 0;
|
|
repaint();
|
|
|
|
if (changed)
|
|
textWasEdited();
|
|
|
|
exitModalState (0);
|
|
|
|
if (changed && isValidComponent())
|
|
callChangeListeners();
|
|
}
|
|
}
|
|
|
|
void Label::inputAttemptWhenModal()
|
|
{
|
|
if (editor != 0)
|
|
{
|
|
if (lossOfFocusDiscardsChanges)
|
|
textEditorEscapeKeyPressed (*editor);
|
|
else
|
|
textEditorReturnKeyPressed (*editor);
|
|
}
|
|
}
|
|
|
|
bool Label::isBeingEdited() const throw()
|
|
{
|
|
return editor != 0;
|
|
}
|
|
|
|
TextEditor* Label::createEditorComponent()
|
|
{
|
|
TextEditor* const ed = new TextEditor (getName());
|
|
ed->setFont (font);
|
|
|
|
// copy these colours from our own settings..
|
|
const int cols[] = { TextEditor::backgroundColourId,
|
|
TextEditor::textColourId,
|
|
TextEditor::highlightColourId,
|
|
TextEditor::highlightedTextColourId,
|
|
TextEditor::caretColourId,
|
|
TextEditor::outlineColourId,
|
|
TextEditor::focusedOutlineColourId,
|
|
TextEditor::shadowColourId };
|
|
|
|
for (int i = 0; i < numElementsInArray (cols); ++i)
|
|
ed->setColour (cols[i], findColour (cols[i]));
|
|
|
|
return ed;
|
|
}
|
|
|
|
//==============================================================================
|
|
void Label::paint (Graphics& g)
|
|
{
|
|
getLookAndFeel().drawLabel (g, *this);
|
|
}
|
|
|
|
void Label::mouseUp (const MouseEvent& e)
|
|
{
|
|
if (editSingleClick
|
|
&& e.mouseWasClicked()
|
|
&& contains (e.x, e.y)
|
|
&& ! e.mods.isPopupMenu())
|
|
{
|
|
showEditor();
|
|
}
|
|
}
|
|
|
|
void Label::mouseDoubleClick (const MouseEvent& e)
|
|
{
|
|
if (editDoubleClick && ! e.mods.isPopupMenu())
|
|
showEditor();
|
|
}
|
|
|
|
void Label::resized()
|
|
{
|
|
if (editor != 0)
|
|
editor->setBoundsInset (BorderSize (0));
|
|
}
|
|
|
|
void Label::focusGained (FocusChangeType cause)
|
|
{
|
|
if (editSingleClick && cause == focusChangedByTabKey)
|
|
showEditor();
|
|
}
|
|
|
|
void Label::enablementChanged()
|
|
{
|
|
repaint();
|
|
}
|
|
|
|
void Label::colourChanged()
|
|
{
|
|
repaint();
|
|
}
|
|
|
|
void Label::setMinimumHorizontalScale (const float newScale)
|
|
{
|
|
if (minimumHorizontalScale != newScale)
|
|
{
|
|
minimumHorizontalScale = newScale;
|
|
repaint();
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
// We'll use a custom focus traverser here to make sure focus goes from the
|
|
// text editor to another component rather than back to the label itself.
|
|
class LabelKeyboardFocusTraverser : public KeyboardFocusTraverser
|
|
{
|
|
public:
|
|
LabelKeyboardFocusTraverser() {}
|
|
|
|
Component* getNextComponent (Component* current)
|
|
{
|
|
return KeyboardFocusTraverser::getNextComponent (dynamic_cast <TextEditor*> (current) != 0
|
|
? current->getParentComponent() : current);
|
|
}
|
|
|
|
Component* getPreviousComponent (Component* current)
|
|
{
|
|
return KeyboardFocusTraverser::getPreviousComponent (dynamic_cast <TextEditor*> (current) != 0
|
|
? current->getParentComponent() : current);
|
|
}
|
|
};
|
|
|
|
KeyboardFocusTraverser* Label::createFocusTraverser()
|
|
{
|
|
return new LabelKeyboardFocusTraverser();
|
|
}
|
|
|
|
//==============================================================================
|
|
void Label::addListener (LabelListener* const listener) throw()
|
|
{
|
|
jassert (listener != 0);
|
|
if (listener != 0)
|
|
listeners.add (listener);
|
|
}
|
|
|
|
void Label::removeListener (LabelListener* const listener) throw()
|
|
{
|
|
listeners.removeValue (listener);
|
|
}
|
|
|
|
void Label::callChangeListeners()
|
|
{
|
|
for (int i = listeners.size(); --i >= 0;)
|
|
{
|
|
((LabelListener*) listeners.getUnchecked (i))->labelTextChanged (this);
|
|
i = jmin (i, listeners.size());
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
void Label::textEditorTextChanged (TextEditor& ed)
|
|
{
|
|
if (editor != 0)
|
|
{
|
|
jassert (&ed == editor);
|
|
|
|
if (! (hasKeyboardFocus (true) || isCurrentlyBlockedByAnotherModalComponent()))
|
|
{
|
|
if (lossOfFocusDiscardsChanges)
|
|
textEditorEscapeKeyPressed (ed);
|
|
else
|
|
textEditorReturnKeyPressed (ed);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Label::textEditorReturnKeyPressed (TextEditor& ed)
|
|
{
|
|
if (editor != 0)
|
|
{
|
|
jassert (&ed == editor);
|
|
(void) ed;
|
|
|
|
const bool changed = updateFromTextEditorContents();
|
|
hideEditor (true);
|
|
|
|
if (changed)
|
|
{
|
|
textWasEdited();
|
|
|
|
if (isValidComponent())
|
|
callChangeListeners();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Label::textEditorEscapeKeyPressed (TextEditor& ed)
|
|
{
|
|
if (editor != 0)
|
|
{
|
|
jassert (&ed == editor);
|
|
(void) ed;
|
|
|
|
editor->setText (text, false);
|
|
hideEditor (true);
|
|
}
|
|
}
|
|
|
|
void Label::textEditorFocusLost (TextEditor& ed)
|
|
{
|
|
textEditorTextChanged (ed);
|
|
}
|
|
|
|
|
|
END_JUCE_NAMESPACE
|