From b924fb97d6fddba818b9ad57722eaf777244e826 Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Thu, 13 Jun 2019 15:31:08 +0300
Subject: Add ability to limit maximum/minimum window size.

---
 platform/osx/os_osx.h  |  7 ++++++
 platform/osx/os_osx.mm | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)

(limited to 'platform/osx')

diff --git a/platform/osx/os_osx.h b/platform/osx/os_osx.h
index eed230ba89..f81aa432ed 100644
--- a/platform/osx/os_osx.h
+++ b/platform/osx/os_osx.h
@@ -134,6 +134,9 @@ public:
 	String im_text;
 	Point2 im_selection;
 
+	Size2 min_size;
+	Size2 max_size;
+
 	PowerOSX *power_manager;
 
 	CrashHandler crash_handler;
@@ -232,6 +235,10 @@ public:
 
 	virtual Point2 get_window_position() const;
 	virtual void set_window_position(const Point2 &p_position);
+	virtual Size2 get_max_window_size() const;
+	virtual Size2 get_min_window_size() const;
+	virtual void set_min_window_size(const Size2 p_size);
+	virtual void set_max_window_size(const Size2 p_size);
 	virtual void set_window_size(const Size2 p_size);
 	virtual void set_window_fullscreen(bool p_enabled);
 	virtual bool is_window_fullscreen() const;
diff --git a/platform/osx/os_osx.mm b/platform/osx/os_osx.mm
index bdc17c7124..d06c44b635 100644
--- a/platform/osx/os_osx.mm
+++ b/platform/osx/os_osx.mm
@@ -267,10 +267,23 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
 
 - (void)windowDidEnterFullScreen:(NSNotification *)notification {
 	OS_OSX::singleton->zoomed = true;
+
+	[OS_OSX::singleton->window_object setContentMinSize:NSMakeSize(0, 0)];
+	[OS_OSX::singleton->window_object setContentMaxSize:NSMakeSize(FLT_MAX, FLT_MAX)];
 }
 
 - (void)windowDidExitFullScreen:(NSNotification *)notification {
 	OS_OSX::singleton->zoomed = false;
+
+	if (OS_OSX::singleton->min_size != Size2()) {
+		Size2 size = OS_OSX::singleton->min_size / OS_OSX::singleton->_display_scale();
+		[OS_OSX::singleton->window_object setContentMinSize:NSMakeSize(size.x, size.y)];
+	}
+	if (OS_OSX::singleton->max_size != Size2()) {
+		Size2 size = OS_OSX::singleton->max_size / OS_OSX::singleton->_display_scale();
+		[OS_OSX::singleton->window_object setContentMaxSize:NSMakeSize(size.x, size.y)];
+	}
+
 	if (!OS_OSX::singleton->resizable)
 		[OS_OSX::singleton->window_object setStyleMask:[OS_OSX::singleton->window_object styleMask] & ~NSWindowStyleMaskResizable];
 }
@@ -2350,6 +2363,46 @@ Size2 OS_OSX::get_real_window_size() const {
 	return Size2(frame.size.width, frame.size.height) * _display_scale();
 }
 
+Size2 OS_OSX::get_max_window_size() const {
+	return max_size;
+}
+
+Size2 OS_OSX::get_min_window_size() const {
+	return min_size;
+}
+
+void OS_OSX::set_min_window_size(const Size2 p_size) {
+
+	if ((p_size != Size2()) && (max_size != Size2()) && ((p_size.x > max_size.x) || (p_size.y > max_size.y))) {
+		WARN_PRINT("Minimum window size can't be larger than maximum window size!");
+		return;
+	}
+	min_size = p_size;
+
+	if ((min_size != Size2()) && !zoomed) {
+		Size2 size = min_size / _display_scale();
+		[window_object setContentMinSize:NSMakeSize(size.x, size.y)];
+	} else {
+		[window_object setContentMinSize:NSMakeSize(0, 0)];
+	}
+}
+
+void OS_OSX::set_max_window_size(const Size2 p_size) {
+
+	if ((p_size != Size2()) && ((p_size.x < min_size.x) || (p_size.y < min_size.y))) {
+		WARN_PRINT("Maximum window size can't be smaller than minimum window size!");
+		return;
+	}
+	max_size = p_size;
+
+	if ((max_size != Size2()) && !zoomed) {
+		Size2 size = max_size / _display_scale();
+		[window_object setContentMaxSize:NSMakeSize(size.x, size.y)];
+	} else {
+		[window_object setContentMaxSize:NSMakeSize(FLT_MAX, FLT_MAX)];
+	}
+}
+
 void OS_OSX::set_window_size(const Size2 p_size) {
 
 	Size2 size = p_size / _display_scale();
@@ -2379,6 +2432,19 @@ void OS_OSX::set_window_fullscreen(bool p_enabled) {
 			set_window_per_pixel_transparency_enabled(false);
 		if (!resizable)
 			[window_object setStyleMask:[window_object styleMask] | NSWindowStyleMaskResizable];
+		if (p_enabled) {
+			[window_object setContentMinSize:NSMakeSize(0, 0)];
+			[window_object setContentMaxSize:NSMakeSize(FLT_MAX, FLT_MAX)];
+		} else {
+			if (min_size != Size2()) {
+				Size2 size = min_size / _display_scale();
+				[window_object setContentMinSize:NSMakeSize(size.x, size.y)];
+			}
+			if (max_size != Size2()) {
+				Size2 size = max_size / _display_scale();
+				[window_object setContentMaxSize:NSMakeSize(size.x, size.y)];
+			}
+		}
 		[window_object toggleFullScreen:nil];
 	}
 	zoomed = p_enabled;
-- 
cgit v1.2.3