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https://github.com/greenshot/greenshot
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"Merged" 0.8 with HEAD, so we can continue developing
git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@1282 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
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RKrom
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297
Greenshot/Drawing/TextContainer.cs
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297
Greenshot/Drawing/TextContainer.cs
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/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2011 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 Sourceforge: http://sourceforge.net/projects/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 System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Drawing.Text;
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using System.Runtime.Serialization;
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using System.Windows.Forms;
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using Greenshot.Configuration;
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using Greenshot.Drawing.Fields;
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using Greenshot.Helpers;
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using Greenshot.Plugin.Drawing;
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namespace Greenshot.Drawing {
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/// <summary>
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/// Represents a textbox (extends RectangleContainer for border/background support
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/// </summary>
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[Serializable()]
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public class TextContainer : RectangleContainer, ITextContainer {
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private bool fontInvalidated = true;
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private Font font;
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private string text;
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public string Text {
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get { return text; }
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set {
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if((text == null && value != null) || !text.Equals(value)) {
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text = value;
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OnPropertyChanged("Text");
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}
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}
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}
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[NonSerialized]
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private TextBox textBox;
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public TextContainer(Surface parent) : base(parent) {
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Init();
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AddField(GetType(), FieldType.LINE_THICKNESS, 1);
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AddField(GetType(), FieldType.LINE_COLOR, Color.Red);
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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, false);
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AddField(GetType(), FieldType.FILL_COLOR, Color.Transparent);
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AddField(GetType(), FieldType.FONT_FAMILY, FontFamily.GenericSansSerif.Name);
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AddField(GetType(), FieldType.FONT_SIZE, 11f);
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}
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[OnDeserializedAttribute()]
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private void OnDeserialized(StreamingContext context) {
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Init();
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UpdateFont();
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}
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/**
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* Destructor
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*/
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~TextContainer() {
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Dispose(false);
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}
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/**
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* The public accessible Dispose
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* Will call the GarbageCollector to SuppressFinalize, preventing being cleaned twice
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*/
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public override void Dispose() {
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Dispose(true);
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base.Dispose();
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GC.SuppressFinalize(this);
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}
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/**
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* This Dispose is called from the Dispose and the Destructor.
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* When disposing==true all non-managed resources should be freed too!
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*/
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protected virtual void Dispose(bool disposing) {
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if (disposing) {
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if(textBox != null) textBox.Dispose();
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if(font != null) font.Dispose();
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}
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textBox = null;
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font = null;
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}
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private void Init() {
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CreateTextBox();
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this.PropertyChanged += new PropertyChangedEventHandler(TextContainer_PropertyChanged);
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this.FieldChanged += new FieldChangedEventHandler(TextContainer_FieldChanged);
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}
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public void FitToText() {
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UpdateFont();
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Size textSize = TextRenderer.MeasureText(text, font);
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int lineThickness = GetFieldValueAsInt(FieldType.LINE_THICKNESS);
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Width = textSize.Width + lineThickness;
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Height = textSize.Height + lineThickness;
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}
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void TextContainer_PropertyChanged(object sender, PropertyChangedEventArgs e) {
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if(e.PropertyName.Equals("Selected")) {
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if(!Selected && textBox.Visible) HideTextBox();
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else if(Selected && Status==EditStatus.DRAWING) {
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ShowTextBox();
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}
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//else if(!textBox.Visible) ShowTextBox();
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}
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if(textBox.Visible) {
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UpdateTextBoxPosition();
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UpdateTextBoxFormat();
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textBox.Invalidate();
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}
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}
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void TextContainer_FieldChanged(object sender, FieldChangedEventArgs e)
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{
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if(textBox.Visible) {
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UpdateTextBoxFormat();
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textBox.Invalidate();
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} else {
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UpdateFont();
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//Invalidate();
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}
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font.Dispose();
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font = null;
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fontInvalidated = true;
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}
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public override void OnDoubleClick() {
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ShowTextBox();
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}
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private void CreateTextBox() {
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textBox = new TextBox();
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textBox.ImeMode = ImeMode.On;
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textBox.Multiline = true;
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textBox.AcceptsTab = true;
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textBox.AcceptsReturn = true;
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textBox.DataBindings.Add("Text", this, "Text", false, DataSourceUpdateMode.OnPropertyChanged);
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textBox.LostFocus += new EventHandler(textBox_LostFocus);
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textBox.KeyDown += new KeyEventHandler(textBox_KeyDown);
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textBox.BorderStyle = BorderStyle.FixedSingle;
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textBox.Visible = false;
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}
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private void ShowTextBox() {
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parent.KeysLocked = true;
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parent.Controls.Add(textBox);
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textBox.Show();
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textBox.Focus();
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}
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private void HideTextBox() {
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parent.Focus();
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textBox.Hide();
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parent.KeysLocked = false;
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parent.Controls.Remove(textBox);
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}
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private void UpdateFont() {
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string fontFamily = GetFieldValueAsString(FieldType.FONT_FAMILY);
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bool fontBold = GetFieldValueAsBool(FieldType.FONT_BOLD);
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bool fontItalic = GetFieldValueAsBool(FieldType.FONT_ITALIC);
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float fontSize = GetFieldValueAsFloat(FieldType.FONT_SIZE);
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if (fontInvalidated && fontFamily != null && fontSize != 0) {
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FontStyle fs = FontStyle.Regular;
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bool hasStyle = false;
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using(FontFamily fam = new FontFamily(fontFamily)) {
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bool boldAvailable = fam.IsStyleAvailable(FontStyle.Bold);
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if(fontBold && boldAvailable) {
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fs |= FontStyle.Bold;
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hasStyle = true;
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}
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bool italicAvailable = fam.IsStyleAvailable(FontStyle.Italic);
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if(fontItalic && italicAvailable) {
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fs |= FontStyle.Italic;
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hasStyle = true;
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}
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if(!hasStyle) {
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bool regularAvailable = fam.IsStyleAvailable(FontStyle.Regular);
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if(regularAvailable) {
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fs = FontStyle.Regular;
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} else {
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if(boldAvailable) {
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fs = FontStyle.Bold;
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} else if(italicAvailable) {
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fs = FontStyle.Italic;
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}
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}
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}
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font = new Font(fam, fontSize, fs, GraphicsUnit.Pixel);
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}
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fontInvalidated = false;
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}
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}
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private void UpdateTextBoxPosition() {
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textBox.Left = this.Left;
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textBox.Top = this.Top;
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textBox.Width = this.Width;
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textBox.Height = this.Height;
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}
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private void UpdateTextBoxFormat() {
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UpdateFont();
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Color lineColor = GetFieldValueAsColor(FieldType.LINE_COLOR);
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textBox.ForeColor = lineColor;
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textBox.Font = font;
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}
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void textBox_KeyDown(object sender, KeyEventArgs e) {
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// ESC and Enter/Return (w/o Shift) hide text editor
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if(e.KeyCode == Keys.Escape || ((e.KeyCode == Keys.Return || e.KeyCode == Keys.Enter) && e.Modifiers == Keys.None)) {
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HideTextBox();
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e.SuppressKeyPress = true;
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}
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}
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void textBox_LostFocus(object sender, EventArgs e) {
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HideTextBox();
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}
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public override void Draw(Graphics g, RenderMode rm) {
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base.Draw(g, rm);
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UpdateFont();
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Rectangle rect = GuiRectangle.GetGuiRectangle(this.Left, this.Top, this.Width, this.Height);
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if (Selected && rm == RenderMode.EDIT) {
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DrawSelectionBorder(g, rect);
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}
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if (text == null || text.Length == 0 ) {
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return;
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}
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// we only draw the shadow if there is no background
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bool shadow = GetFieldValueAsBool(FieldType.SHADOW);
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Color fillColor = GetFieldValueAsColor(FieldType.FILL_COLOR);
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int lineThickness = GetFieldValueAsInt(FieldType.LINE_THICKNESS);
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int textOffset = (lineThickness>0) ? (int)Math.Ceiling(lineThickness/2d) : 0;
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// draw shadow before anything else
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if ( shadow && (fillColor == Color.Transparent || fillColor == Color.Empty)) {
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int basealpha = 100;
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int alpha = basealpha;
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int steps = 5;
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int currentStep = 1;
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while (currentStep <= steps) {
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int offset = currentStep;
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Rectangle shadowRect = GuiRectangle.GetGuiRectangle(Left + offset, Top + offset, Width, Height);
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if(lineThickness > 0) {
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shadowRect.Inflate(-textOffset, -textOffset);
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}
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using (Brush fontBrush = new SolidBrush(Color.FromArgb(alpha, 100, 100, 100))) {
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g.DrawString(text, font, fontBrush, shadowRect);
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currentStep++;
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alpha = alpha - basealpha / steps;
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}
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}
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}
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Color lineColor = GetFieldValueAsColor(FieldType.LINE_COLOR);
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Rectangle fontRect = rect;
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if(lineThickness > 0) {
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fontRect.Inflate(-textOffset,-textOffset);
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}
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using (Brush fontBrush = new SolidBrush(lineColor)) {
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g.DrawString(text, font, fontBrush, fontRect);
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}
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}
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}
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}
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