alexpete
76 lines
3.0 KiB
C++
76 lines
3.0 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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#include "UiCanvasEditor_precompiled.h"
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#include "EditorCommon.h"
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#include <LyShine/Bus/UiEditorCanvasBus.h>
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namespace CanvasHelpers
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{
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AZStd::string BeginUndoableCanvasChange(AZ::EntityId canvasEntityId)
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{
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// Currently this serializes the entire canvas including all elements.
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AZStd::string canvasUndoXml;
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EBUS_EVENT_ID_RESULT(canvasUndoXml, canvasEntityId, UiCanvasBus, SaveToXmlString);
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return canvasUndoXml;
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}
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void EndUndoableCanvasChange(EditorWindow* editorWindow, const char* commandName, AZStd::string& canvasUndoXml)
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{
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// serialize the changed state of the canvas
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AZStd::string canvasRedoXml;
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EBUS_EVENT_ID_RESULT(canvasRedoXml, editorWindow->GetCanvas(), UiCanvasBus, SaveToXmlString);
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if (canvasUndoXml.empty() || canvasRedoXml.empty())
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{
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AZ_Warning("UI", false, "Failed to serialize canvas for undo of %s'.", commandName);
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}
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else
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{
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// Create the undoable command and push it onto the undo stack
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CommandCanvasPropertiesChange::Push(editorWindow->GetActiveStack(), canvasUndoXml, canvasRedoXml, editorWindow, commandName);
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}
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}
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AZ::Vector2 GetViewportPoint(AZ::EntityId canvasEntityId, const AZ::Vector2& canvasPoint)
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{
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AZ::Matrix4x4 transform;
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EBUS_EVENT_ID_RESULT(transform, canvasEntityId, UiCanvasBus, GetCanvasToViewportMatrix);
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AZ::Vector3 canvasPoint3(canvasPoint.GetX(), canvasPoint.GetY(), 0.0f);
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AZ::Vector3 viewportPoint3 = transform * canvasPoint3;
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AZ::Vector2 viewportPoint(viewportPoint3.GetX(), viewportPoint3.GetY());
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return viewportPoint;
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}
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AZ::Vector2 GetSnappedCanvasPoint(AZ::EntityId canvasEntityId, const AZ::Vector2& viewportPoint, bool snapToGrid)
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{
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AZ::Matrix4x4 transform;
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EBUS_EVENT_ID(canvasEntityId, UiCanvasBus, GetViewportToCanvasMatrix, transform);
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AZ::Vector3 viewportPoint3(viewportPoint.GetX(), viewportPoint.GetY(), 0.0f);
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AZ::Vector3 canvasPoint3 = transform * viewportPoint3;
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AZ::Vector2 canvasPoint(canvasPoint3.GetX(), canvasPoint3.GetY());
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// if the snapping flag is off we still always snap to the nearest pixel
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float snapDistance = 1.0f;
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if (snapToGrid)
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{
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EBUS_EVENT_ID_RESULT(snapDistance, canvasEntityId, UiEditorCanvasBus, GetSnapDistance);
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}
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return EntityHelpers::Snap(canvasPoint, snapDistance);
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}
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} // namespace CanvasHelpers
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