mirror of
https://github.com/greenshot/greenshot.git
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346 lines
13 KiB
C#
346 lines
13 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2012 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using Greenshot.Drawing.Fields;
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using Greenshot.Helpers;
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using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Text;
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using System.Runtime.Serialization;
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using GreenshotPlugin.Interfaces.Drawing;
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namespace Greenshot.Drawing
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{
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/// <summary>
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/// Description of SpeechbubbleContainer.
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/// </summary>
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[Serializable]
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public class SpeechbubbleContainer : TextContainer {
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private Point _initialGripperPoint;
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// Only used for serializing the TargetGripper location
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private Point _storedTargetGripperLocation;
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/// <summary>
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/// Store the current location of the target gripper
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/// </summary>
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/// <param name="context"></param>
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[OnSerializing]
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private void SetValuesOnSerializing(StreamingContext context) {
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if (TargetAdorner != null) {
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_storedTargetGripperLocation = TargetAdorner.Location;
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}
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}
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/// <summary>
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/// Restore the target gripper
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/// </summary>
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/// <param name="streamingContext">StreamingContext</param>
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protected override void OnDeserialized(StreamingContext streamingContext)
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{
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base.OnDeserialized(streamingContext);
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InitAdorner(Color.Green, _storedTargetGripperLocation);
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}
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public SpeechbubbleContainer(Surface parent)
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: base(parent) {
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}
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/// <summary>
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/// We set our own field values
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/// </summary>
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protected override void InitializeFields() {
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AddField(GetType(), FieldType.LINE_THICKNESS, 2);
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AddField(GetType(), FieldType.LINE_COLOR, Color.Blue);
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AddField(GetType(), FieldType.SHADOW, false);
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AddField(GetType(), FieldType.FONT_ITALIC, false);
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AddField(GetType(), FieldType.FONT_BOLD, true);
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AddField(GetType(), FieldType.FILL_COLOR, Color.White);
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AddField(GetType(), FieldType.FONT_FAMILY, FontFamily.GenericSansSerif.Name);
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AddField(GetType(), FieldType.FONT_SIZE, 20f);
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AddField(GetType(), FieldType.TEXT_HORIZONTAL_ALIGNMENT, StringAlignment.Center);
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AddField(GetType(), FieldType.TEXT_VERTICAL_ALIGNMENT, StringAlignment.Center);
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}
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/// <summary>
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/// Called from Surface (the _parent) when the drawing begins (mouse-down)
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/// </summary>
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/// <returns>true if the surface doesn't need to handle the event</returns>
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public override bool HandleMouseDown(int mouseX, int mouseY) {
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if (TargetAdorner == null) {
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_initialGripperPoint = new Point(mouseX, mouseY);
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InitAdorner(Color.Green, new Point(mouseX, mouseY));
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}
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return base.HandleMouseDown(mouseX, mouseY);
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}
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/// <summary>
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/// Overriding the HandleMouseMove will help us to make sure the tail is always visible.
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/// Should fix BUG-1682
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/// </summary>
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/// <param name="x"></param>
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/// <param name="y"></param>
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/// <returns>base.HandleMouseMove</returns>
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public override bool HandleMouseMove(int x, int y) {
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bool returnValue = base.HandleMouseMove(x, y);
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bool leftAligned = _boundsAfterResize.Right - _boundsAfterResize.Left >= 0;
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bool topAligned = _boundsAfterResize.Bottom - _boundsAfterResize.Top >= 0;
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int xOffset = leftAligned ? -20 : 20;
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int yOffset = topAligned ? -20 : 20;
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Point newGripperLocation = _initialGripperPoint;
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newGripperLocation.Offset(xOffset, yOffset);
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if (TargetAdorner.Location != newGripperLocation) {
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Invalidate();
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TargetAdorner.Location = newGripperLocation;
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Invalidate();
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}
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return returnValue;
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}
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/// <summary>
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/// The DrawingBound should be so close as possible to the shape, so we don't invalidate to much.
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/// </summary>
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public override Rectangle DrawingBounds {
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get {
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if (Status != EditStatus.UNDRAWN) {
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int lineThickness = GetFieldValueAsInt(FieldType.LINE_THICKNESS);
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Color lineColor = GetFieldValueAsColor(FieldType.LINE_COLOR);
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bool shadow = GetFieldValueAsBool(FieldType.SHADOW);
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using Pen pen = new Pen(lineColor, lineThickness);
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int inflateValue = lineThickness + 2 + (shadow ? 6 : 0);
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using GraphicsPath tailPath = CreateTail();
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return Rectangle.Inflate(Rectangle.Union(Rectangle.Round(tailPath.GetBounds(new Matrix(), pen)), GuiRectangle.GetGuiRectangle(Left, Top, Width, Height)), inflateValue, inflateValue);
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}
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return Rectangle.Empty;
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}
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}
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/// <summary>
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/// Helper method to create the bubble GraphicsPath, so we can also calculate the bounds
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/// </summary>
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/// <param name="lineThickness"></param>
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/// <returns></returns>
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private GraphicsPath CreateBubble(int lineThickness) {
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GraphicsPath bubble = new GraphicsPath();
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Rectangle rect = GuiRectangle.GetGuiRectangle(Left, Top, Width, Height);
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Rectangle bubbleRect = GuiRectangle.GetGuiRectangle(0, 0, rect.Width, rect.Height);
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// adapt corner radius to small rectangle dimensions
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int smallerSideLength = Math.Min(bubbleRect.Width, bubbleRect.Height);
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int cornerRadius = Math.Min(30, smallerSideLength / 2 - lineThickness);
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if (cornerRadius > 0) {
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bubble.AddArc(bubbleRect.X, bubbleRect.Y, cornerRadius, cornerRadius, 180, 90);
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bubble.AddArc(bubbleRect.X + bubbleRect.Width - cornerRadius, bubbleRect.Y, cornerRadius, cornerRadius, 270, 90);
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bubble.AddArc(bubbleRect.X + bubbleRect.Width - cornerRadius, bubbleRect.Y + bubbleRect.Height - cornerRadius, cornerRadius, cornerRadius, 0, 90);
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bubble.AddArc(bubbleRect.X, bubbleRect.Y + bubbleRect.Height - cornerRadius, cornerRadius, cornerRadius, 90, 90);
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} else {
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bubble.AddRectangle(bubbleRect);
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}
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bubble.CloseAllFigures();
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using (Matrix bubbleMatrix = new Matrix()) {
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bubbleMatrix.Translate(rect.Left, rect.Top);
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bubble.Transform(bubbleMatrix);
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}
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return bubble;
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}
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/// <summary>
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/// Helper method to create the tail of the bubble, so we can also calculate the bounds
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/// </summary>
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/// <returns></returns>
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private GraphicsPath CreateTail() {
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Rectangle rect = GuiRectangle.GetGuiRectangle(Left, Top, Width, Height);
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int tailLength = GeometryHelper.Distance2D(rect.Left + (rect.Width / 2), rect.Top + (rect.Height / 2), TargetAdorner.Location.X, TargetAdorner.Location.Y);
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int tailWidth = (Math.Abs(rect.Width) + Math.Abs(rect.Height)) / 20;
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// This should fix a problem with the tail being to wide
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tailWidth = Math.Min(Math.Abs(rect.Width) / 2, tailWidth);
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tailWidth = Math.Min(Math.Abs(rect.Height) / 2, tailWidth);
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GraphicsPath tail = new GraphicsPath();
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tail.AddLine(-tailWidth, 0, tailWidth, 0);
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tail.AddLine(tailWidth, 0, 0, -tailLength);
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tail.CloseFigure();
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int tailAngle = 90 + (int)GeometryHelper.Angle2D(rect.Left + rect.Width / 2, rect.Top + rect.Height / 2, TargetAdorner.Location.X, TargetAdorner.Location.Y);
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using (Matrix tailMatrix = new Matrix()) {
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tailMatrix.Translate(rect.Left + rect.Width / 2, rect.Top + rect.Height / 2);
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tailMatrix.Rotate(tailAngle);
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tail.Transform(tailMatrix);
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}
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return tail;
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}
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/// <summary>
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/// This is to draw the actual container
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/// </summary>
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/// <param name="graphics"></param>
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/// <param name="renderMode"></param>
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public override void Draw(Graphics graphics, RenderMode renderMode) {
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if (TargetAdorner == null) {
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return;
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}
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graphics.SmoothingMode = SmoothingMode.HighQuality;
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graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
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graphics.CompositingQuality = CompositingQuality.HighQuality;
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graphics.PixelOffsetMode = PixelOffsetMode.None;
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graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
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Color lineColor = GetFieldValueAsColor(FieldType.LINE_COLOR);
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Color fillColor = GetFieldValueAsColor(FieldType.FILL_COLOR);
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bool shadow = GetFieldValueAsBool(FieldType.SHADOW);
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int lineThickness = GetFieldValueAsInt(FieldType.LINE_THICKNESS);
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bool lineVisible = lineThickness > 0 && Colors.IsVisible(lineColor);
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Rectangle rect = GuiRectangle.GetGuiRectangle(Left, Top, Width, Height);
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if (Selected && renderMode == RenderMode.EDIT) {
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DrawSelectionBorder(graphics, rect);
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}
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GraphicsPath bubble = CreateBubble(lineThickness);
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GraphicsPath tail = CreateTail();
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//draw shadow first
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if (shadow && (lineVisible || Colors.IsVisible(fillColor))) {
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const int basealpha = 100;
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int alpha = basealpha;
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const int steps = 5;
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int currentStep = lineVisible ? 1 : 0;
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using Matrix shadowMatrix = new Matrix();
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using GraphicsPath bubbleClone = (GraphicsPath)bubble.Clone();
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using GraphicsPath tailClone = (GraphicsPath)tail.Clone();
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shadowMatrix.Translate(1, 1);
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while (currentStep <= steps) {
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using (Pen shadowPen = new Pen(Color.FromArgb(alpha, 100, 100, 100))) {
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shadowPen.Width = lineVisible ? lineThickness : 1;
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tailClone.Transform(shadowMatrix);
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graphics.DrawPath(shadowPen, tailClone);
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bubbleClone.Transform(shadowMatrix);
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graphics.DrawPath(shadowPen, bubbleClone);
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}
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currentStep++;
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alpha -= basealpha / steps;
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}
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}
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GraphicsState state = graphics.Save();
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// draw the tail border where the bubble is not visible
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using (Region clipRegion = new Region(bubble)) {
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graphics.SetClip(clipRegion, CombineMode.Exclude);
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using Pen pen = new Pen(lineColor, lineThickness);
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graphics.DrawPath(pen, tail);
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}
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graphics.Restore(state);
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if (Colors.IsVisible(fillColor)) {
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//draw the bubbleshape
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state = graphics.Save();
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using (Brush brush = new SolidBrush(fillColor)) {
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graphics.FillPath(brush, bubble);
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}
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graphics.Restore(state);
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}
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if (lineVisible) {
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//draw the bubble border
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state = graphics.Save();
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// Draw bubble where the Tail is not visible.
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using (Region clipRegion = new Region(tail)) {
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graphics.SetClip(clipRegion, CombineMode.Exclude);
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using Pen pen = new Pen(lineColor, lineThickness);
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//pen.EndCap = pen.StartCap = LineCap.Round;
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graphics.DrawPath(pen, bubble);
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}
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graphics.Restore(state);
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}
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if (Colors.IsVisible(fillColor)) {
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// Draw the tail border
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state = graphics.Save();
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using (Brush brush = new SolidBrush(fillColor)) {
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graphics.FillPath(brush, tail);
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}
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graphics.Restore(state);
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}
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// cleanup the paths
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bubble.Dispose();
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tail.Dispose();
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// Draw the text
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DrawText(graphics, rect, lineThickness, lineColor, shadow, StringFormat, Text, Font);
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}
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public override bool Contains(int x, int y) {
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if (base.Contains(x, y)) {
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return true;
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}
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Point clickedPoint = new Point(x, y);
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if (Status != EditStatus.UNDRAWN) {
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int lineThickness = GetFieldValueAsInt(FieldType.LINE_THICKNESS);
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Color lineColor = GetFieldValueAsColor(FieldType.LINE_COLOR);
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using Pen pen = new Pen(lineColor, lineThickness);
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using (GraphicsPath bubblePath = CreateBubble(lineThickness)) {
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bubblePath.Widen(pen);
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if (bubblePath.IsVisible(clickedPoint)) {
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return true;
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}
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}
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using GraphicsPath tailPath = CreateTail();
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tailPath.Widen(pen);
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if (tailPath.IsVisible(clickedPoint)) {
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return true;
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}
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}
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return false;
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}
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public override bool ClickableAt(int x, int y) {
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return Contains(x,y);
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}
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/// <summary>
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/// Additional to the Transform of the TextContainer the bubble tail coordinates also need to be moved
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/// </summary>
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/// <param name="matrix">Matrix</param>
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public override void Transform(Matrix matrix)
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{
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Point[] points = { TargetAdorner.Location };
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matrix.TransformPoints(points);
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TargetAdorner.Location = points[0];
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base.Transform(matrix);
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}
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}
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}
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