Small improvements to the Spatial Editor's multiple viewport mode

doc/classes/Input.xml

@@ -381,7 +381,7 @@
 			Pointing hand cursor. Usually used to indicate the pointer is over a link or other interactable item.
 		</constant>
 		<constant name="CURSOR_CROSS" value="3" enum="CursorShape">
-			Cross cursor. Typically appears over regions in which a drawing operation can be performance or for selections.
+			Cross cursor. Typically appears over regions in which a drawing operation can be performed or for selections.
 		</constant>
 		<constant name="CURSOR_WAIT" value="4" enum="CursorShape">
 			Wait cursor. Indicates that the application is busy performing an operation.

editor/icons/icon_GUI_viewport_hdiagsplitter.svg

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="64"
+   height="34"
+   version="1.1"
+   viewBox="0 0 64 34"
+   id="svg6"
+   sodipodi:docname="icon_GUI_vsplitter1.svg"
+   inkscape:version="0.92.2 2405546, 2018-03-11">
+  <metadata
+     id="metadata12">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs10" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="714"
+     id="namedview8"
+     showgrid="false"
+     inkscape:zoom="5.6568543"
+     inkscape:cx="37.006499"
+     inkscape:cy="15.680715"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg6" />
+  <g
+     transform="translate(0,-1018.4)"
+     id="g4" />
+  <g
+     transform="rotate(90,541.2,539.2)"
+     id="g4-3">
+    <path
+       id="path2-6"
+       style="fill:none;stroke:#ffffff;stroke-width:2;stroke-linecap:round;stroke-opacity:0.39216003"
+       d="M 4.0306826,1048.4 H 34 m -30,30 v -60"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="cccc" />
+  </g>
+</svg>

editor/icons/icon_GUI_viewport_vdiagsplitter.svg

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="34"
+   height="64"
+   version="1.1"
+   viewBox="0 0 34 64"
+   id="svg6"
+   sodipodi:docname="icon_GUI_vsplitter2.svg"
+   inkscape:version="0.92.2 2405546, 2018-03-11">
+  <metadata
+     id="metadata12">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs10" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="714"
+     id="namedview8"
+     showgrid="false"
+     inkscape:zoom="4"
+     inkscape:cx="32.245723"
+     inkscape:cy="44.255214"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg6" />
+  <g
+     transform="translate(0,-988.4)"
+     id="g4" />
+  <g
+     id="g839"
+     transform="rotate(90,32.003536,32.003535)">
+    <g
+       id="g4-3"
+       transform="rotate(90,526.2,554.2)">
+      <path
+         sodipodi:nodetypes="cccc"
+         inkscape:connector-curvature="0"
+         d="M 4.0306826,1048.4 H 34 m -30,30 v -60"
+         style="fill:none;stroke:#ffffff;stroke-width:2;stroke-linecap:round;stroke-opacity:0.39216003"
+         id="path2-6" />
+    </g>
+  </g>
+</svg>

editor/icons/icon_GUI_viewport_vhsplitter.svg

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="64"
+   height="64"
+   version="1.1"
+   viewBox="0 0 64 64"
+   id="svg6"
+   sodipodi:docname="icon_GUI_vsplitter.svg"
+   inkscape:version="0.92.2 2405546, 2018-03-11">
+  <metadata
+     id="metadata12">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs10" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="714"
+     id="namedview8"
+     showgrid="false"
+     inkscape:zoom="4.65625"
+     inkscape:cx="9.8488117"
+     inkscape:cy="20.04653"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg6" />
+  <g
+     transform="translate(0,-988.4)"
+     id="g4" />
+  <g
+     transform="rotate(90,526.2,554.2)"
+     id="g4-3">
+    <path
+       id="path2-6"
+       style="fill:none;stroke:#ffffff;stroke-width:2;stroke-linecap:round;stroke-opacity:0.39216003"
+       d="m -26,1048.4 h 60 m -30,30 v -60"
+       inkscape:connector-curvature="0" />
+  </g>
+</svg>

editor/plugins/spatial_editor_plugin.cpp

@@ -3546,69 +3546,77 @@ void SpatialEditorViewportContainer::_gui_input(const Ref<InputEvent> &p_event)
 
 	Ref<InputEventMouseButton> mb = p_event;
 
-	if (mb.is_valid() && mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT) {
+	if (mb.is_valid() && mb->get_button_index() == BUTTON_LEFT) {
 
-		Vector2 size = get_size();
-
-		int h_sep = get_constant("separation", "HSplitContainer");
-		int v_sep = get_constant("separation", "VSplitContainer");
-
-		int mid_w = size.width * ratio_h;
-		int mid_h = size.height * ratio_v;
+		if (mb->is_pressed()) {
+			Vector2 size = get_size();
 
-		dragging_h = mb->get_position().x > (mid_w - h_sep / 2) && mb->get_position().x < (mid_w + h_sep / 2);
-		dragging_v = mb->get_position().y > (mid_h - v_sep / 2) && mb->get_position().y < (mid_h + v_sep / 2);
+			int h_sep = get_constant("separation", "HSplitContainer");
+			int v_sep = get_constant("separation", "VSplitContainer");
 
-		drag_begin_pos = mb->get_position();
-		drag_begin_ratio.x = ratio_h;
-		drag_begin_ratio.y = ratio_v;
+			int mid_w = size.width * ratio_h;
+			int mid_h = size.height * ratio_v;
 
-		switch (view) {
-			case VIEW_USE_1_VIEWPORT: {
+			dragging_h = mb->get_position().x > (mid_w - h_sep / 2) && mb->get_position().x < (mid_w + h_sep / 2);
+			dragging_v = mb->get_position().y > (mid_h - v_sep / 2) && mb->get_position().y < (mid_h + v_sep / 2);
 
-				dragging_h = false;
-				dragging_v = false;
+			drag_begin_pos = mb->get_position();
+			drag_begin_ratio.x = ratio_h;
+			drag_begin_ratio.y = ratio_v;
 
-			} break;
-			case VIEW_USE_2_VIEWPORTS: {
+			switch (view) {
+				case VIEW_USE_1_VIEWPORT: {
 
-				dragging_h = false;
+					dragging_h = false;
+					dragging_v = false;
 
-			} break;
-			case VIEW_USE_2_VIEWPORTS_ALT: {
+				} break;
+				case VIEW_USE_2_VIEWPORTS: {
 
-				dragging_v = false;
+					dragging_h = false;
 
-			} break;
-			case VIEW_USE_3_VIEWPORTS: {
+				} break;
+				case VIEW_USE_2_VIEWPORTS_ALT: {
 
-				if (dragging_v)
-					dragging_h = false;
-				else
 					dragging_v = false;
 
-			} break;
-			case VIEW_USE_3_VIEWPORTS_ALT: {
+				} break;
+				case VIEW_USE_3_VIEWPORTS:
+				case VIEW_USE_3_VIEWPORTS_ALT:
+				case VIEW_USE_4_VIEWPORTS: {
 
-				if (dragging_h)
-					dragging_v = false;
-				else
-					dragging_h = false;
-			} break;
-			case VIEW_USE_4_VIEWPORTS: {
+					// Do nothing.
 
-			} break;
+				} break;
+			}
+		} else {
+			dragging_h = false;
+			dragging_v = false;
 		}
 	}
 
-	if (mb.is_valid() && !mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT) {
-		dragging_h = false;
-		dragging_v = false;
-	}
-
 	Ref<InputEventMouseMotion> mm = p_event;
 
-	if (mm.is_valid() && (dragging_h || dragging_v)) {
+	if (mm.is_valid()) {
+
+		if (view == VIEW_USE_3_VIEWPORTS || view == VIEW_USE_3_VIEWPORTS_ALT || view == VIEW_USE_4_VIEWPORTS) {
+			Vector2 size = get_size();
+
+			int h_sep = get_constant("separation", "HSplitContainer");
+			int v_sep = get_constant("separation", "VSplitContainer");
+
+			int mid_w = size.width * ratio_h;
+			int mid_h = size.height * ratio_v;
+
+			bool was_hovering_h = hovering_h;
+			bool was_hovering_v = hovering_v;
+			hovering_h = mm->get_position().x > (mid_w - h_sep / 2) && mm->get_position().x < (mid_w + h_sep / 2);
+			hovering_v = mm->get_position().y > (mid_h - v_sep / 2) && mm->get_position().y < (mid_h + v_sep / 2);
+
+			if (was_hovering_h != hovering_h || was_hovering_v != hovering_v) {
+				update();
+			}
+		}
 
 		if (dragging_h) {
 			float new_ratio = drag_begin_ratio.x + (mm->get_position().x - drag_begin_pos.x) / get_size().width;
@@ -3638,9 +3646,12 @@ void SpatialEditorViewportContainer::_notification(int p_what) {
 	if (p_what == NOTIFICATION_DRAW && mouseover) {
 
 		Ref<Texture> h_grabber = get_icon("grabber", "HSplitContainer");
-
 		Ref<Texture> v_grabber = get_icon("grabber", "VSplitContainer");
 
+		Ref<Texture> hdiag_grabber = get_icon("GuiViewportHdiagsplitter", "EditorIcons");
+		Ref<Texture> vdiag_grabber = get_icon("GuiViewportVdiagsplitter", "EditorIcons");
+		Ref<Texture> vh_grabber = get_icon("GuiViewportVhsplitter", "EditorIcons");
+
 		Vector2 size = get_size();
 
 		int h_sep = get_constant("separation", "HSplitContainer");
@@ -3657,35 +3668,62 @@ void SpatialEditorViewportContainer::_notification(int p_what) {
 
 			case VIEW_USE_1_VIEWPORT: {
 
-				//nothing to show
+				// Nothing to show.
 
 			} break;
 			case VIEW_USE_2_VIEWPORTS: {
 
 				draw_texture(v_grabber, Vector2((size.width - v_grabber->get_width()) / 2, mid_h - v_grabber->get_height() / 2));
+				set_default_cursor_shape(CURSOR_VSPLIT);
 
 			} break;
 			case VIEW_USE_2_VIEWPORTS_ALT: {
 
 				draw_texture(h_grabber, Vector2(mid_w - h_grabber->get_width() / 2, (size.height - h_grabber->get_height()) / 2));
+				set_default_cursor_shape(CURSOR_HSPLIT);
 
 			} break;
 			case VIEW_USE_3_VIEWPORTS: {
 
-				draw_texture(v_grabber, Vector2((size.width - v_grabber->get_width()) / 2, mid_h - v_grabber->get_height() / 2));
-				draw_texture(h_grabber, Vector2(mid_w - h_grabber->get_width() / 2, mid_h + v_grabber->get_height() / 2 + (size_bottom - h_grabber->get_height()) / 2));
+				if ((hovering_v && hovering_h && !dragging_v && !dragging_h) || (dragging_v && dragging_h)) {
+					draw_texture(hdiag_grabber, Vector2(mid_w - hdiag_grabber->get_width() / 2, mid_h - v_grabber->get_height() / 4));
+					set_default_cursor_shape(CURSOR_DRAG);
+				} else if ((hovering_v && !dragging_h) || dragging_v) {
+					draw_texture(v_grabber, Vector2((size.width - v_grabber->get_width()) / 2, mid_h - v_grabber->get_height() / 2));
+					set_default_cursor_shape(CURSOR_VSPLIT);
+				} else if (hovering_h || dragging_h) {
+					draw_texture(h_grabber, Vector2(mid_w - h_grabber->get_width() / 2, mid_h + v_grabber->get_height() / 2 + (size_bottom - h_grabber->get_height()) / 2));
+					set_default_cursor_shape(CURSOR_HSPLIT);
+				}
 
 			} break;
 			case VIEW_USE_3_VIEWPORTS_ALT: {
 
-				draw_texture(v_grabber, Vector2((size_left - v_grabber->get_width()) / 2, mid_h - v_grabber->get_height() / 2));
-				draw_texture(h_grabber, Vector2(mid_w - h_grabber->get_width() / 2, (size.height - h_grabber->get_height()) / 2));
+				if ((hovering_v && hovering_h && !dragging_v && !dragging_h) || (dragging_v && dragging_h)) {
+					draw_texture(vdiag_grabber, Vector2(mid_w - vdiag_grabber->get_width() + v_grabber->get_height() / 4, mid_h - vdiag_grabber->get_height() / 2));
+					set_default_cursor_shape(CURSOR_DRAG);
+				} else if ((hovering_v && !dragging_h) || dragging_v) {
+					draw_texture(v_grabber, Vector2((size_left - v_grabber->get_width()) / 2, mid_h - v_grabber->get_height() / 2));
+					set_default_cursor_shape(CURSOR_VSPLIT);
+				} else if (hovering_h || dragging_h) {
+					draw_texture(h_grabber, Vector2(mid_w - h_grabber->get_width() / 2, (size.height - h_grabber->get_height()) / 2));
+					set_default_cursor_shape(CURSOR_HSPLIT);
+				}
+
 			} break;
 			case VIEW_USE_4_VIEWPORTS: {
 
 				Vector2 half(mid_w, mid_h);
-				draw_texture(v_grabber, half - v_grabber->get_size() / 2.0);
-				draw_texture(h_grabber, half - h_grabber->get_size() / 2.0);
+				if ((hovering_v && hovering_h && !dragging_v && !dragging_h) || (dragging_v && dragging_h)) {
+					draw_texture(vh_grabber, half - vh_grabber->get_size() / 2.0);
+					set_default_cursor_shape(CURSOR_DRAG);
+				} else if ((hovering_v && !dragging_h) || dragging_v) {
+					draw_texture(v_grabber, half - v_grabber->get_size() / 2.0);
+					set_default_cursor_shape(CURSOR_VSPLIT);
+				} else if (hovering_h || dragging_h) {
+					draw_texture(h_grabber, half - h_grabber->get_size() / 2.0);
+					set_default_cursor_shape(CURSOR_HSPLIT);
+				}
 
 			} break;
 		}
@@ -3829,10 +3867,13 @@ void SpatialEditorViewportContainer::_bind_methods() {
 
 SpatialEditorViewportContainer::SpatialEditorViewportContainer() {
 
+	set_clip_contents(true);
 	view = VIEW_USE_1_VIEWPORT;
 	mouseover = false;
 	ratio_h = 0.5;
 	ratio_v = 0.5;
+	hovering_v = false;
+	hovering_h = false;
 	dragging_v = false;
 	dragging_h = false;
 }

editor/plugins/spatial_editor_plugin.h

@@ -445,6 +445,9 @@ private:
 	float ratio_h;
 	float ratio_v;
 
+	bool hovering_v;
+	bool hovering_h;
+
 	bool dragging_v;
 	bool dragging_h;
 	Vector2 drag_begin_pos;