697 lines
19 KiB
C++
697 lines
19 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2017 - ROLI Ltd.
|
|
|
|
JUCE is an open source library subject to commercial or open-source
|
|
licensing.
|
|
|
|
By using JUCE, you agree to the terms of both the JUCE 5 End-User License
|
|
Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
|
|
27th April 2017).
|
|
|
|
End User License Agreement: www.juce.com/juce-5-licence
|
|
Privacy Policy: www.juce.com/juce-5-privacy-policy
|
|
|
|
Or: You may also use this code under the terms of the GPL v3 (see
|
|
www.gnu.org/licenses).
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce
|
|
{
|
|
|
|
struct Button::CallbackHelper : public Timer,
|
|
public ApplicationCommandManagerListener,
|
|
public Value::Listener,
|
|
public KeyListener
|
|
{
|
|
CallbackHelper (Button& b) : button (b) {}
|
|
|
|
void timerCallback() override
|
|
{
|
|
button.repeatTimerCallback();
|
|
}
|
|
|
|
bool keyStateChanged (bool, Component*) override
|
|
{
|
|
return button.keyStateChangedCallback();
|
|
}
|
|
|
|
void valueChanged (Value& value) override
|
|
{
|
|
if (value.refersToSameSourceAs (button.isOn))
|
|
button.setToggleState (button.isOn.getValue(), dontSendNotification, sendNotification);
|
|
}
|
|
|
|
bool keyPressed (const KeyPress&, Component*) override
|
|
{
|
|
// returning true will avoid forwarding events for keys that we're using as shortcuts
|
|
return button.isShortcutPressed();
|
|
}
|
|
|
|
void applicationCommandInvoked (const ApplicationCommandTarget::InvocationInfo& info) override
|
|
{
|
|
if (info.commandID == button.commandID
|
|
&& (info.commandFlags & ApplicationCommandInfo::dontTriggerVisualFeedback) == 0)
|
|
button.flashButtonState();
|
|
}
|
|
|
|
void applicationCommandListChanged() override
|
|
{
|
|
button.applicationCommandListChangeCallback();
|
|
}
|
|
|
|
Button& button;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (CallbackHelper)
|
|
};
|
|
|
|
//==============================================================================
|
|
Button::Button (const String& name) : Component (name), text (name)
|
|
{
|
|
callbackHelper.reset (new CallbackHelper (*this));
|
|
|
|
setWantsKeyboardFocus (true);
|
|
isOn.addListener (callbackHelper.get());
|
|
}
|
|
|
|
Button::~Button()
|
|
{
|
|
clearShortcuts();
|
|
|
|
if (commandManagerToUse != nullptr)
|
|
commandManagerToUse->removeListener (callbackHelper.get());
|
|
|
|
isOn.removeListener (callbackHelper.get());
|
|
callbackHelper.reset();
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::setButtonText (const String& newText)
|
|
{
|
|
if (text != newText)
|
|
{
|
|
text = newText;
|
|
repaint();
|
|
}
|
|
}
|
|
|
|
void Button::setTooltip (const String& newTooltip)
|
|
{
|
|
SettableTooltipClient::setTooltip (newTooltip);
|
|
generateTooltip = false;
|
|
}
|
|
|
|
void Button::updateAutomaticTooltip (const ApplicationCommandInfo& info)
|
|
{
|
|
if (generateTooltip && commandManagerToUse != nullptr)
|
|
{
|
|
auto tt = info.description.isNotEmpty() ? info.description
|
|
: info.shortName;
|
|
|
|
for (auto& kp : commandManagerToUse->getKeyMappings()->getKeyPressesAssignedToCommand (commandID))
|
|
{
|
|
auto key = kp.getTextDescription();
|
|
|
|
tt << " [";
|
|
|
|
if (key.length() == 1)
|
|
tt << TRANS("shortcut") << ": '" << key << "']";
|
|
else
|
|
tt << key << ']';
|
|
}
|
|
|
|
SettableTooltipClient::setTooltip (tt);
|
|
}
|
|
}
|
|
|
|
void Button::setConnectedEdges (int newFlags)
|
|
{
|
|
if (connectedEdgeFlags != newFlags)
|
|
{
|
|
connectedEdgeFlags = newFlags;
|
|
repaint();
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::setToggleState (bool shouldBeOn, NotificationType notification)
|
|
{
|
|
setToggleState (shouldBeOn, notification, notification);
|
|
}
|
|
|
|
void Button::setToggleState (bool shouldBeOn, NotificationType clickNotification, NotificationType stateNotification)
|
|
{
|
|
if (shouldBeOn != lastToggleState)
|
|
{
|
|
WeakReference<Component> deletionWatcher (this);
|
|
|
|
if (shouldBeOn)
|
|
{
|
|
turnOffOtherButtonsInGroup (clickNotification, stateNotification);
|
|
|
|
if (deletionWatcher == nullptr)
|
|
return;
|
|
}
|
|
|
|
// This test is done so that if the value is void rather than explicitly set to
|
|
// false, the value won't be changed unless the required value is true.
|
|
if (getToggleState() != shouldBeOn)
|
|
{
|
|
isOn = shouldBeOn;
|
|
|
|
if (deletionWatcher == nullptr)
|
|
return;
|
|
}
|
|
|
|
lastToggleState = shouldBeOn;
|
|
repaint();
|
|
|
|
if (clickNotification != dontSendNotification)
|
|
{
|
|
// async callbacks aren't possible here
|
|
jassert (clickNotification != sendNotificationAsync);
|
|
|
|
sendClickMessage (ModifierKeys::currentModifiers);
|
|
|
|
if (deletionWatcher == nullptr)
|
|
return;
|
|
}
|
|
|
|
if (stateNotification != dontSendNotification)
|
|
sendStateMessage();
|
|
else
|
|
buttonStateChanged();
|
|
}
|
|
}
|
|
|
|
void Button::setToggleState (bool shouldBeOn, bool sendChange)
|
|
{
|
|
setToggleState (shouldBeOn, sendChange ? sendNotification : dontSendNotification);
|
|
}
|
|
|
|
void Button::setClickingTogglesState (bool shouldToggle) noexcept
|
|
{
|
|
clickTogglesState = shouldToggle;
|
|
|
|
// if you've got clickTogglesState turned on, you shouldn't also connect the button
|
|
// up to be a command invoker. Instead, your command handler must flip the state of whatever
|
|
// it is that this button represents, and the button will update its state to reflect this
|
|
// in the applicationCommandListChanged() method.
|
|
jassert (commandManagerToUse == nullptr || ! clickTogglesState);
|
|
}
|
|
|
|
bool Button::getClickingTogglesState() const noexcept
|
|
{
|
|
return clickTogglesState;
|
|
}
|
|
|
|
void Button::setRadioGroupId (int newGroupId, NotificationType notification)
|
|
{
|
|
if (radioGroupId != newGroupId)
|
|
{
|
|
radioGroupId = newGroupId;
|
|
|
|
if (lastToggleState)
|
|
turnOffOtherButtonsInGroup (notification, notification);
|
|
}
|
|
}
|
|
|
|
void Button::turnOffOtherButtonsInGroup (NotificationType clickNotification, NotificationType stateNotification)
|
|
{
|
|
if (auto* p = getParentComponent())
|
|
{
|
|
if (radioGroupId != 0)
|
|
{
|
|
WeakReference<Component> deletionWatcher (this);
|
|
|
|
for (auto* c : p->getChildren())
|
|
{
|
|
if (c != this)
|
|
{
|
|
if (auto b = dynamic_cast<Button*> (c))
|
|
{
|
|
if (b->getRadioGroupId() == radioGroupId)
|
|
{
|
|
b->setToggleState (false, clickNotification, stateNotification);
|
|
|
|
if (deletionWatcher == nullptr)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::enablementChanged()
|
|
{
|
|
updateState();
|
|
repaint();
|
|
}
|
|
|
|
Button::ButtonState Button::updateState()
|
|
{
|
|
return updateState (isMouseOver (true), isMouseButtonDown());
|
|
}
|
|
|
|
Button::ButtonState Button::updateState (bool over, bool down)
|
|
{
|
|
ButtonState newState = buttonNormal;
|
|
|
|
if (isEnabled() && isVisible() && ! isCurrentlyBlockedByAnotherModalComponent())
|
|
{
|
|
if ((down && (over || (triggerOnMouseDown && buttonState == buttonDown))) || isKeyDown)
|
|
newState = buttonDown;
|
|
else if (over)
|
|
newState = buttonOver;
|
|
}
|
|
|
|
setState (newState);
|
|
return newState;
|
|
}
|
|
|
|
void Button::setState (ButtonState newState)
|
|
{
|
|
if (buttonState != newState)
|
|
{
|
|
buttonState = newState;
|
|
repaint();
|
|
|
|
if (buttonState == buttonDown)
|
|
{
|
|
buttonPressTime = Time::getApproximateMillisecondCounter();
|
|
lastRepeatTime = 0;
|
|
}
|
|
|
|
sendStateMessage();
|
|
}
|
|
}
|
|
|
|
bool Button::isDown() const noexcept { return buttonState == buttonDown; }
|
|
bool Button::isOver() const noexcept { return buttonState != buttonNormal; }
|
|
|
|
void Button::buttonStateChanged() {}
|
|
|
|
uint32 Button::getMillisecondsSinceButtonDown() const noexcept
|
|
{
|
|
auto now = Time::getApproximateMillisecondCounter();
|
|
return now > buttonPressTime ? now - buttonPressTime : 0;
|
|
}
|
|
|
|
void Button::setTriggeredOnMouseDown (bool isTriggeredOnMouseDown) noexcept
|
|
{
|
|
triggerOnMouseDown = isTriggeredOnMouseDown;
|
|
}
|
|
|
|
bool Button::getTriggeredOnMouseDown() const noexcept
|
|
{
|
|
return triggerOnMouseDown;
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::clicked()
|
|
{
|
|
}
|
|
|
|
void Button::clicked (const ModifierKeys&)
|
|
{
|
|
clicked();
|
|
}
|
|
|
|
enum { clickMessageId = 0x2f3f4f99 };
|
|
|
|
void Button::triggerClick()
|
|
{
|
|
postCommandMessage (clickMessageId);
|
|
}
|
|
|
|
void Button::internalClickCallback (const ModifierKeys& modifiers)
|
|
{
|
|
if (clickTogglesState)
|
|
{
|
|
const bool shouldBeOn = (radioGroupId != 0 || ! lastToggleState);
|
|
|
|
if (shouldBeOn != getToggleState())
|
|
{
|
|
setToggleState (shouldBeOn, sendNotification);
|
|
return;
|
|
}
|
|
}
|
|
|
|
sendClickMessage (modifiers);
|
|
}
|
|
|
|
void Button::flashButtonState()
|
|
{
|
|
if (isEnabled())
|
|
{
|
|
needsToRelease = true;
|
|
setState (buttonDown);
|
|
callbackHelper->startTimer (100);
|
|
}
|
|
}
|
|
|
|
void Button::handleCommandMessage (int commandId)
|
|
{
|
|
if (commandId == clickMessageId)
|
|
{
|
|
if (isEnabled())
|
|
{
|
|
flashButtonState();
|
|
internalClickCallback (ModifierKeys::currentModifiers);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Component::handleCommandMessage (commandId);
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::addListener (Listener* l) { buttonListeners.add (l); }
|
|
void Button::removeListener (Listener* l) { buttonListeners.remove (l); }
|
|
|
|
void Button::sendClickMessage (const ModifierKeys& modifiers)
|
|
{
|
|
Component::BailOutChecker checker (this);
|
|
|
|
if (commandManagerToUse != nullptr && commandID != 0)
|
|
{
|
|
ApplicationCommandTarget::InvocationInfo info (commandID);
|
|
info.invocationMethod = ApplicationCommandTarget::InvocationInfo::fromButton;
|
|
info.originatingComponent = this;
|
|
|
|
commandManagerToUse->invoke (info, true);
|
|
}
|
|
|
|
clicked (modifiers);
|
|
|
|
if (checker.shouldBailOut())
|
|
return;
|
|
|
|
buttonListeners.callChecked (checker, [this] (Listener& l) { l.buttonClicked (this); });
|
|
|
|
if (checker.shouldBailOut())
|
|
return;
|
|
|
|
if (onClick != nullptr)
|
|
onClick();
|
|
}
|
|
|
|
void Button::sendStateMessage()
|
|
{
|
|
Component::BailOutChecker checker (this);
|
|
|
|
buttonStateChanged();
|
|
|
|
if (checker.shouldBailOut())
|
|
return;
|
|
|
|
buttonListeners.callChecked (checker, [this] (Listener& l) { l.buttonStateChanged (this); });
|
|
|
|
if (checker.shouldBailOut())
|
|
return;
|
|
|
|
if (onStateChange != nullptr)
|
|
onStateChange();
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::paint (Graphics& g)
|
|
{
|
|
if (needsToRelease && isEnabled())
|
|
{
|
|
needsToRelease = false;
|
|
needsRepainting = true;
|
|
}
|
|
|
|
paintButton (g, isOver(), isDown());
|
|
lastStatePainted = buttonState;
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::mouseEnter (const MouseEvent&) { updateState (true, false); }
|
|
void Button::mouseExit (const MouseEvent&) { updateState (false, false); }
|
|
|
|
void Button::mouseDown (const MouseEvent& e)
|
|
{
|
|
updateState (true, true);
|
|
|
|
if (isDown())
|
|
{
|
|
if (autoRepeatDelay >= 0)
|
|
callbackHelper->startTimer (autoRepeatDelay);
|
|
|
|
if (triggerOnMouseDown)
|
|
internalClickCallback (e.mods);
|
|
}
|
|
}
|
|
|
|
void Button::mouseUp (const MouseEvent& e)
|
|
{
|
|
const bool wasDown = isDown();
|
|
const bool wasOver = isOver();
|
|
updateState (isMouseOrTouchOver (e), false);
|
|
|
|
if (wasDown && wasOver && ! triggerOnMouseDown)
|
|
{
|
|
if (lastStatePainted != buttonDown)
|
|
flashButtonState();
|
|
|
|
internalClickCallback (e.mods);
|
|
}
|
|
}
|
|
|
|
void Button::mouseDrag (const MouseEvent& e)
|
|
{
|
|
auto oldState = buttonState;
|
|
updateState (isMouseOrTouchOver (e), true);
|
|
|
|
if (autoRepeatDelay >= 0 && buttonState != oldState && isDown())
|
|
callbackHelper->startTimer (autoRepeatSpeed);
|
|
}
|
|
|
|
bool Button::isMouseOrTouchOver (const MouseEvent& e)
|
|
{
|
|
if (e.source.isTouch())
|
|
return getLocalBounds().toFloat().contains (e.position);
|
|
|
|
return isMouseOver();
|
|
}
|
|
|
|
void Button::focusGained (FocusChangeType)
|
|
{
|
|
updateState();
|
|
repaint();
|
|
}
|
|
|
|
void Button::focusLost (FocusChangeType)
|
|
{
|
|
updateState();
|
|
repaint();
|
|
}
|
|
|
|
void Button::visibilityChanged()
|
|
{
|
|
needsToRelease = false;
|
|
updateState();
|
|
}
|
|
|
|
void Button::parentHierarchyChanged()
|
|
{
|
|
auto* newKeySource = shortcuts.isEmpty() ? nullptr : getTopLevelComponent();
|
|
|
|
if (newKeySource != keySource.get())
|
|
{
|
|
if (keySource != nullptr)
|
|
keySource->removeKeyListener (callbackHelper.get());
|
|
|
|
keySource = newKeySource;
|
|
|
|
if (keySource != nullptr)
|
|
keySource->addKeyListener (callbackHelper.get());
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::setCommandToTrigger (ApplicationCommandManager* newCommandManager,
|
|
CommandID newCommandID, bool generateTip)
|
|
{
|
|
commandID = newCommandID;
|
|
generateTooltip = generateTip;
|
|
|
|
if (commandManagerToUse != newCommandManager)
|
|
{
|
|
if (commandManagerToUse != nullptr)
|
|
commandManagerToUse->removeListener (callbackHelper.get());
|
|
|
|
commandManagerToUse = newCommandManager;
|
|
|
|
if (commandManagerToUse != nullptr)
|
|
commandManagerToUse->addListener (callbackHelper.get());
|
|
|
|
// if you've got clickTogglesState turned on, you shouldn't also connect the button
|
|
// up to be a command invoker. Instead, your command handler must flip the state of whatever
|
|
// it is that this button represents, and the button will update its state to reflect this
|
|
// in the applicationCommandListChanged() method.
|
|
jassert (commandManagerToUse == nullptr || ! clickTogglesState);
|
|
}
|
|
|
|
if (commandManagerToUse != nullptr)
|
|
applicationCommandListChangeCallback();
|
|
else
|
|
setEnabled (true);
|
|
}
|
|
|
|
void Button::applicationCommandListChangeCallback()
|
|
{
|
|
if (commandManagerToUse != nullptr)
|
|
{
|
|
ApplicationCommandInfo info (0);
|
|
|
|
if (commandManagerToUse->getTargetForCommand (commandID, info) != nullptr)
|
|
{
|
|
updateAutomaticTooltip (info);
|
|
setEnabled ((info.flags & ApplicationCommandInfo::isDisabled) == 0);
|
|
setToggleState ((info.flags & ApplicationCommandInfo::isTicked) != 0, dontSendNotification);
|
|
}
|
|
else
|
|
{
|
|
setEnabled (false);
|
|
}
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::addShortcut (const KeyPress& key)
|
|
{
|
|
if (key.isValid())
|
|
{
|
|
jassert (! isRegisteredForShortcut (key)); // already registered!
|
|
|
|
shortcuts.add (key);
|
|
parentHierarchyChanged();
|
|
}
|
|
}
|
|
|
|
void Button::clearShortcuts()
|
|
{
|
|
shortcuts.clear();
|
|
parentHierarchyChanged();
|
|
}
|
|
|
|
bool Button::isShortcutPressed() const
|
|
{
|
|
if (isShowing() && ! isCurrentlyBlockedByAnotherModalComponent())
|
|
for (auto& s : shortcuts)
|
|
if (s.isCurrentlyDown())
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Button::isRegisteredForShortcut (const KeyPress& key) const
|
|
{
|
|
for (auto& s : shortcuts)
|
|
if (key == s)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Button::keyStateChangedCallback()
|
|
{
|
|
if (! isEnabled())
|
|
return false;
|
|
|
|
const bool wasDown = isKeyDown;
|
|
isKeyDown = isShortcutPressed();
|
|
|
|
if (autoRepeatDelay >= 0 && (isKeyDown && ! wasDown))
|
|
callbackHelper->startTimer (autoRepeatDelay);
|
|
|
|
updateState();
|
|
|
|
if (isEnabled() && wasDown && ! isKeyDown)
|
|
{
|
|
internalClickCallback (ModifierKeys::currentModifiers);
|
|
|
|
// (return immediately - this button may now have been deleted)
|
|
return true;
|
|
}
|
|
|
|
return wasDown || isKeyDown;
|
|
}
|
|
|
|
bool Button::keyPressed (const KeyPress& key)
|
|
{
|
|
if (isEnabled() && key.isKeyCode (KeyPress::returnKey))
|
|
{
|
|
triggerClick();
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
//==============================================================================
|
|
void Button::setRepeatSpeed (int initialDelayMillisecs,
|
|
int repeatMillisecs,
|
|
int minimumDelayInMillisecs) noexcept
|
|
{
|
|
autoRepeatDelay = initialDelayMillisecs;
|
|
autoRepeatSpeed = repeatMillisecs;
|
|
autoRepeatMinimumDelay = jmin (autoRepeatSpeed, minimumDelayInMillisecs);
|
|
}
|
|
|
|
void Button::repeatTimerCallback()
|
|
{
|
|
if (needsRepainting)
|
|
{
|
|
callbackHelper->stopTimer();
|
|
updateState();
|
|
needsRepainting = false;
|
|
}
|
|
else if (autoRepeatSpeed > 0 && (isKeyDown || (updateState() == buttonDown)))
|
|
{
|
|
auto repeatSpeed = autoRepeatSpeed;
|
|
|
|
if (autoRepeatMinimumDelay >= 0)
|
|
{
|
|
auto timeHeldDown = jmin (1.0, getMillisecondsSinceButtonDown() / 4000.0);
|
|
timeHeldDown *= timeHeldDown;
|
|
|
|
repeatSpeed = repeatSpeed + (int) (timeHeldDown * (autoRepeatMinimumDelay - repeatSpeed));
|
|
}
|
|
|
|
repeatSpeed = jmax (1, repeatSpeed);
|
|
|
|
auto now = Time::getMillisecondCounter();
|
|
|
|
// if we've been blocked from repeating often enough, speed up the repeat timer to compensate..
|
|
if (lastRepeatTime != 0 && (int) (now - lastRepeatTime) > repeatSpeed * 2)
|
|
repeatSpeed = jmax (1, repeatSpeed / 2);
|
|
|
|
lastRepeatTime = now;
|
|
callbackHelper->startTimer (repeatSpeed);
|
|
|
|
internalClickCallback (ModifierKeys::currentModifiers);
|
|
}
|
|
else if (! needsToRelease)
|
|
{
|
|
callbackHelper->stopTimer();
|
|
}
|
|
}
|
|
|
|
} // namespace juce
|