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https://github.com/ShareX/ShareX.git
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403 lines
13 KiB
C#
403 lines
13 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (c) 2007-2024 ShareX Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using ShareX.HelpersLib.Properties;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Windows.Forms;
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namespace ShareX.HelpersLib
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{
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public class ImageViewer : Form
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{
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public Image CurrentImage { get; private set; }
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public string CurrentImageFilePath { get; private set; }
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public bool SupportWrap { get; set; }
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public bool CanNavigate => Images != null && Images.Length > 1;
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public bool CanNavigateLeft => CanNavigate && (SupportWrap || CurrentImageIndex > 0);
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public bool CanNavigateRight => CanNavigate && (SupportWrap || CurrentImageIndex < Images.Length - 1);
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public string[] Images { get; private set; }
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public int CurrentImageIndex { get; private set; }
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public int NavigationButtonWidth { get; set; } = 100;
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public string Status { get; private set; }
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private ImageViewer(Image img)
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{
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InitializeComponent();
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ShareXResources.ApplyTheme(this);
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LoadImage(img);
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}
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private ImageViewer(string[] images, int currentImageIndex = 0)
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{
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InitializeComponent();
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ShareXResources.ApplyTheme(this);
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Images = images;
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CurrentImageIndex = currentImageIndex;
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FilterImageFiles();
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LoadCurrentImage();
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}
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private void LoadImage(Image img)
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{
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CurrentImage?.Dispose();
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CurrentImage = img;
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pbPreview.LoadImage(CurrentImage);
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}
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private void LoadCurrentImage()
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{
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if (Images != null && Images.Length > 0)
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{
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CurrentImageIndex = CurrentImageIndex.Clamp(0, Images.Length - 1);
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CurrentImageFilePath = Images[CurrentImageIndex];
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Image img = ImageHelpers.LoadImage(CurrentImageFilePath);
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LoadImage(img);
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}
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UpdateStatus();
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}
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private void NavigateImage(int position)
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{
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if (CanNavigate)
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{
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int nextImageIndex = CurrentImageIndex + position;
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if (SupportWrap)
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{
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if (nextImageIndex > Images.Length - 1)
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{
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nextImageIndex = 0;
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}
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else if (nextImageIndex < 0)
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{
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nextImageIndex = Images.Length - 1;
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}
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}
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nextImageIndex = nextImageIndex.Clamp(0, Images.Length - 1);
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if (CurrentImageIndex != nextImageIndex)
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{
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CurrentImageIndex = nextImageIndex;
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LoadCurrentImage();
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}
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}
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}
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private void FilterImageFiles()
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{
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List<string> filteredImages = new List<string>();
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for (int i = 0; i < Images.Length; i++)
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{
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string imageFilePath = Images[i];
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bool isImageFile = !string.IsNullOrEmpty(imageFilePath) && FileHelpers.IsImageFile(imageFilePath);
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if (i == CurrentImageIndex)
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{
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if (isImageFile)
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{
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CurrentImageIndex = filteredImages.Count;
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}
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else
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{
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CurrentImageIndex = Math.Max(filteredImages.Count - 1, 0);
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}
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}
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if (isImageFile)
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{
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filteredImages.Add(imageFilePath);
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}
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}
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Images = filteredImages.ToArray();
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}
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private void UpdateStatus()
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{
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Status = "";
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if (CanNavigate)
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{
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AppendStatus($"{CurrentImageIndex + 1} / {Images.Length}");
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}
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string fileName = FileHelpers.GetFileNameSafe(CurrentImageFilePath);
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if (!string.IsNullOrEmpty(fileName))
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{
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fileName = fileName.Truncate(128, "...");
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AppendStatus(fileName);
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}
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if (CurrentImage != null)
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{
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AppendStatus($"{CurrentImage.Width} x {CurrentImage.Height}");
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}
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lblStatus.Visible = !string.IsNullOrEmpty(Status);
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lblStatus.Text = Status;
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lblStatus.Location = new Point((ClientSize.Width - lblStatus.Width) / 2, 0);
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}
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private void AppendStatus(string text)
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{
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if (!string.IsNullOrEmpty(Status))
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{
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Status += " │ ";
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}
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Status += text;
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}
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public static void ShowImage(Image img)
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{
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if (img != null)
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{
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using (Image tempImage = img.CloneSafe())
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{
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if (tempImage != null)
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{
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using (ImageViewer viewer = new ImageViewer(tempImage))
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{
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viewer.ShowDialog();
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}
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}
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}
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}
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}
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public static void ShowImage(string filePath)
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{
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using (Bitmap bmp = ImageHelpers.LoadImage(filePath))
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{
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if (bmp != null)
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{
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using (ImageViewer viewer = new ImageViewer(bmp))
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{
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viewer.ShowDialog();
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}
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}
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}
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}
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public static void ShowImage(string[] files, int imageIndex = 0)
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{
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if (files != null && files.Length > 0)
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{
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using (ImageViewer viewer = new ImageViewer(files, imageIndex))
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{
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viewer.ShowDialog();
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}
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}
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}
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private void ImageViewer_Shown(object sender, EventArgs e)
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{
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UpdateStatus();
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this.ForceActivate();
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}
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private void ImageViewer_Deactivate(object sender, EventArgs e)
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{
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Close();
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}
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private void lblLeft_MouseDown(object sender, MouseEventArgs e)
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{
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if (e.Button == MouseButtons.Left)
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{
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NavigateImage(-1);
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lblLeft.Visible = CanNavigateLeft;
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}
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}
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private void lblRight_MouseDown(object sender, MouseEventArgs e)
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{
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if (e.Button == MouseButtons.Left)
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{
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NavigateImage(1);
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lblRight.Visible = CanNavigateRight;
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}
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}
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private void pbPreview_MouseClick(object sender, MouseEventArgs e)
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{
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Close();
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}
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private void pbPreview_MouseMove(object sender, MouseEventArgs e)
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{
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lblStatus.Visible = !string.IsNullOrEmpty(Status) && !new Rectangle(lblStatus.Location, lblStatus.Size).Contains(e.Location);
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lblLeft.Visible = CanNavigateLeft && new Rectangle(lblLeft.Location, lblLeft.Size).Contains(e.Location);
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lblRight.Visible = CanNavigateRight && new Rectangle(lblRight.Location, lblRight.Size).Contains(e.Location);
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}
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private void pbPreview_MouseWheel(object sender, MouseEventArgs e)
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{
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if (CanNavigateLeft && e.Delta > 0)
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{
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NavigateImage(-1);
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}
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else if (CanNavigateRight && e.Delta < 0)
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{
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NavigateImage(1);
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}
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}
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private void pbPreview_KeyDown(object sender, KeyEventArgs e)
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{
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switch (e.KeyCode)
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{
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case Keys.Left:
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NavigateImage(-1);
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break;
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case Keys.Right:
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NavigateImage(1);
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break;
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}
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}
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private void pbPreview_KeyUp(object sender, KeyEventArgs e)
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{
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switch (e.KeyCode)
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{
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case Keys.Escape:
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case Keys.Enter:
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case Keys.Space:
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Close();
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break;
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}
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}
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private void pbPreview_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
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{
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switch (e.KeyCode)
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{
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case Keys.Left:
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case Keys.Right:
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e.IsInputKey = true;
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break;
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}
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}
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private void lblStatus_MouseEnter(object sender, EventArgs e)
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{
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lblStatus.Visible = false;
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}
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#region Windows Form Designer generated code
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private System.ComponentModel.IContainer components = null;
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protected override void Dispose(bool disposing)
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{
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if (disposing && (components != null))
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{
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components.Dispose();
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}
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CurrentImage?.Dispose();
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base.Dispose(disposing);
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}
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private void InitializeComponent()
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{
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pbPreview = new MyPictureBox();
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lblStatus = new Label();
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lblLeft = new Label();
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lblRight = new Label();
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SuspendLayout();
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BackColor = SystemColors.Window;
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Bounds = CaptureHelpers.GetActiveScreenBounds();
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DoubleBuffered = true;
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FormBorderStyle = FormBorderStyle.None;
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Text = Resources.ShareXImageViewer;
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TopMost = true;
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WindowState = FormWindowState.Normal;
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StartPosition = FormStartPosition.Manual;
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lblStatus.AutoSize = true;
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lblStatus.Font = new Font("Arial", 13f);
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lblStatus.Padding = new Padding(5);
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lblStatus.TextAlign = ContentAlignment.MiddleCenter;
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Controls.Add(lblStatus);
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lblLeft.Cursor = Cursors.Hand;
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lblLeft.Font = new Font("Arial", 50f, FontStyle.Bold);
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lblLeft.Location = new Point(0, 0);
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lblLeft.Text = "‹";
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lblLeft.TextAlign = ContentAlignment.MiddleCenter;
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lblLeft.Size = new Size(NavigationButtonWidth, Bounds.Height);
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lblLeft.MouseDown += lblLeft_MouseDown;
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Controls.Add(lblLeft);
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lblRight.Cursor = Cursors.Hand;
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lblRight.Font = new Font("Arial", 50f, FontStyle.Bold);
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lblRight.Location = new Point(Bounds.Width - NavigationButtonWidth, 0);
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lblRight.Text = "›";
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lblRight.TextAlign = ContentAlignment.MiddleCenter;
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lblRight.Size = new Size(NavigationButtonWidth, Bounds.Height);
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lblRight.MouseDown += lblRight_MouseDown;
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Controls.Add(lblRight);
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pbPreview.Dock = DockStyle.Fill;
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pbPreview.DrawCheckeredBackground = true;
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pbPreview.Location = new Point(0, 0);
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pbPreview.Size = new Size(100, 100);
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pbPreview.TabIndex = 0;
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Controls.Add(pbPreview);
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Shown += ImageViewer_Shown;
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Deactivate += ImageViewer_Deactivate;
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pbPreview.MouseClick += pbPreview_MouseClick;
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pbPreview.MouseMove += pbPreview_MouseMove;
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pbPreview.MouseWheel += pbPreview_MouseWheel;
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pbPreview.KeyDown += pbPreview_KeyDown;
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pbPreview.KeyUp += pbPreview_KeyUp;
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pbPreview.PreviewKeyDown += pbPreview_PreviewKeyDown;
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lblStatus.MouseEnter += lblStatus_MouseEnter;
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ResumeLayout(false);
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}
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private MyPictureBox pbPreview;
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private Label lblStatus;
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private Label lblLeft;
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private Label lblRight;
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#endregion Windows Form Designer generated code
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}
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} |