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Added possibility to respond to when the sidepanels move/pan #173

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Added possibility to respond to when the sidepanels move/pan #173

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3 changes: 3 additions & 0 deletions JASidePanels/Source/JASidePanelController.h
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Original file line number Diff line number Diff line change
Expand Up @@ -94,6 +94,9 @@ typedef enum _JASidePanelState {
// by default applies rounded corners to the panel. override in sublcass to change
- (void)stylePanel:(UIView *)panel;

// This method will be called whenever the sidepanel visible amount change. Subclass this method to react to changes of how much of the center panel / side panels are visible
- (void)willPanToSidePanelVisiblePercent:(CGFloat)percent duration:(CGFloat)duration;

#pragma mark - Animation

// the minimum % of total screen width the centerPanel.view must move for panGesture to succeed
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13 changes: 11 additions & 2 deletions JASidePanels/Source/JASidePanelController.m
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Expand Up @@ -516,8 +516,10 @@ - (void)_handlePan:(UIGestureRecognizer *)sender {
if (self.style == JASidePanelMultipleActive || self.pushesSidePanels) {
[self _layoutSideContainers:NO duration:0];
}

if (sender.state == UIGestureRecognizerStateEnded) {
if(sender.state == UIGestureRecognizerStateChanged) {
CGFloat fullyVisibleWidth = frame.origin.x > 0.0f ? self.leftVisibleWidth : -self.rightVisibleWidth;
[self willPanToSidePanelVisiblePercent:(frame.origin.x / fullyVisibleWidth) duration:0.0f];
} else if (sender.state == UIGestureRecognizerStateEnded) {
CGFloat deltaX = frame.origin.x - _locationBeforePan.x;
if ([self _validateThreshold:deltaX]) {
[self _completePan:deltaX];
Expand Down Expand Up @@ -567,6 +569,8 @@ - (void)_undoPan {
}
}

- (void)willPanToSidePanelVisiblePercent:(CGFloat)percent duration:(CGFloat)duration {}

#pragma mark - Tap Gesture

- (void)setTapView:(UIView *)tapView {
Expand Down Expand Up @@ -738,6 +742,8 @@ - (void)_animateCenterPanel:(BOOL)shouldBounce completion:(void (^)(BOOL finishe
}

CGFloat duration = [self _calculatedDuration];
CGFloat sidePanelVisiblePercent = _centerPanelRestingFrame.origin.x == 0.0f ? 0.0f : 1.0f;
[self willPanToSidePanelVisiblePercent:sidePanelVisiblePercent duration:duration];
[UIView animateWithDuration:duration delay:0.0f options:UIViewAnimationOptionCurveLinear|UIViewAnimationOptionLayoutSubviews animations:^{
self.centerPanelContainer.frame = _centerPanelRestingFrame;
[self styleContainer:self.centerPanelContainer animate:YES duration:duration];
Expand Down Expand Up @@ -829,6 +835,7 @@ - (void)_showLeftPanel:(BOOL)animated bounce:(BOOL)shouldBounce {
if (animated) {
[self _animateCenterPanel:shouldBounce completion:nil];
} else {
[self willPanToSidePanelVisiblePercent:1.0f duration:0.0f];
self.centerPanelContainer.frame = _centerPanelRestingFrame;
[self styleContainer:self.centerPanelContainer animate:NO duration:0.0f];
if (self.style == JASidePanelMultipleActive || self.pushesSidePanels) {
Expand All @@ -851,6 +858,7 @@ - (void)_showRightPanel:(BOOL)animated bounce:(BOOL)shouldBounce {
if (animated) {
[self _animateCenterPanel:shouldBounce completion:nil];
} else {
[self willPanToSidePanelVisiblePercent:1.0f duration:0.0f];
self.centerPanelContainer.frame = _centerPanelRestingFrame;
[self styleContainer:self.centerPanelContainer animate:NO duration:0.0f];
if (self.style == JASidePanelMultipleActive || self.pushesSidePanels) {
Expand All @@ -876,6 +884,7 @@ - (void)_showCenterPanel:(BOOL)animated bounce:(BOOL)shouldBounce {
[self _unloadPanels];
}];
} else {
[self willPanToSidePanelVisiblePercent:0.0f duration:0.0f];
self.centerPanelContainer.frame = _centerPanelRestingFrame;
[self styleContainer:self.centerPanelContainer animate:NO duration:0.0f];
if (self.style == JASidePanelMultipleActive || self.pushesSidePanels) {
Expand Down