From 0684fe4159a4673dc10ccd392e82e9c85ae0726a Mon Sep 17 00:00:00 2001
From: Andreas Butti <andreas.butti@gmail.com>
Date: Thu, 27 Dec 2018 16:17:13 +0100
Subject: [PATCH] Layer sidebar repaint fixed

---
 src/control/layer/LayerController.cpp         |  7 +++++
 src/control/layer/LayerController.h           |  1 +
 .../previews/layer/SidebarPreviewLayers.cpp   | 28 +++++++++++++++++++
 .../previews/layer/SidebarPreviewLayers.h     |  5 ++++
 4 files changed, 41 insertions(+)

diff --git a/src/control/layer/LayerController.cpp b/src/control/layer/LayerController.cpp
index 2b868cb1..2faea2b8 100644
--- a/src/control/layer/LayerController.cpp
+++ b/src/control/layer/LayerController.cpp
@@ -250,6 +250,13 @@ PageRef LayerController::getCurrentPage()
 	return control->getDocument()->getPage(selectedPage);
 }
 
+size_t LayerController::getCurrentPageId()
+{
+	XOJ_CHECK_TYPE(LayerController);
+
+	return selectedPage;
+}
+
 void LayerController::setLayerVisible(int layerId, bool visible)
 {
 	XOJ_CHECK_TYPE(LayerController);
diff --git a/src/control/layer/LayerController.h b/src/control/layer/LayerController.h
index cbd5b7af..131a5404 100644
--- a/src/control/layer/LayerController.h
+++ b/src/control/layer/LayerController.h
@@ -69,6 +69,7 @@ public:
 	void setLayerVisible(int layerId, bool visible);
 
 	PageRef getCurrentPage();
+	size_t getCurrentPageId();
 
 	/**
 	 * @return Layer count of the current page
diff --git a/src/gui/sidebar/previews/layer/SidebarPreviewLayers.cpp b/src/gui/sidebar/previews/layer/SidebarPreviewLayers.cpp
index 88d74e5e..5e2ad024 100644
--- a/src/gui/sidebar/previews/layer/SidebarPreviewLayers.cpp
+++ b/src/gui/sidebar/previews/layer/SidebarPreviewLayers.cpp
@@ -54,6 +54,34 @@ string SidebarPreviewLayers::getIconName()
 	return "layer.svg";
 }
 
+void SidebarPreviewLayers::pageSizeChanged(size_t page)
+{
+	XOJ_CHECK_TYPE(SidebarPreviewLayers);
+
+	if (page != this->lc->getCurrentPageId())
+	{
+		return;
+	}
+
+	updatePreviews();
+}
+
+void SidebarPreviewLayers::pageChanged(size_t page)
+{
+	XOJ_CHECK_TYPE(SidebarPreviewLayers);
+
+	if (page != this->lc->getCurrentPageId())
+	{
+		return;
+	}
+
+	// Repaint all layer
+	for (SidebarPreviewBaseEntry* p : this->previews)
+	{
+		p->repaint();
+	}
+}
+
 void SidebarPreviewLayers::updatePreviews()
 {
 	XOJ_CHECK_TYPE(SidebarPreviewLayers);
diff --git a/src/gui/sidebar/previews/layer/SidebarPreviewLayers.h b/src/gui/sidebar/previews/layer/SidebarPreviewLayers.h
index 4154c97d..88e9e4fd 100644
--- a/src/gui/sidebar/previews/layer/SidebarPreviewLayers.h
+++ b/src/gui/sidebar/previews/layer/SidebarPreviewLayers.h
@@ -58,6 +58,11 @@ public:
 protected:
 	void updateSelectedLayer();
 
+public:
+	// DocumentListener interface (only the part which is not handled by SidebarPreviewBase)
+	virtual void pageSizeChanged(size_t page);
+	virtual void pageChanged(size_t page);
+
 private:
 	XOJ_TYPE_ATTRIB;