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Apply dark mode to all forms automatically #107

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Apply dark mode to all forms automatically #107

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39bd4b8
apply dark mode to all forms automatically
molsonkiko Apr 28, 2023
16d3516
Fix csproj, improve dark mode toggling
molsonkiko Jun 20, 2023
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147 changes: 145 additions & 2 deletions Demo Plugin/NppManagedPluginDemo/Demo.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,9 @@
using System;
using System.IO;
using System.Text;
using System.Collections.Generic;
using System.Drawing;
using System.Reflection;
using System.Threading;
using System.Windows.Forms;
using System.Drawing.Imaging;
Expand Down Expand Up @@ -38,7 +40,13 @@ public static void OnNotification(ScNotification notification)
{
if (notification.Header.Code == (uint)SciMsg.SCN_CHARADDED)
{
Kbg.Demo.Namespace.Main.doInsertHtmlCloseTag((char)notification.Character);
Demo.Namespace.Main.doInsertHtmlCloseTag((char)notification.Character);
}
// dark mode (de-)activated
if (notification.Header.Code == (uint)NppMsg.NPPN_DARKMODECHANGED)
{
INotepadPPGateway notepad = new NotepadPPGateway();
Demo.Namespace.Main.ToggleDarkMode(Demo.Namespace.Main.frmGoToLine, notepad.IsDarkModeEnabled());
}
}

Expand All @@ -57,7 +65,7 @@ class Main
static string keyName = "doCloseTag";
static bool doCloseTag = false;
static string sessionFilePath = @"C:\text.session";
static frmGoToLine frmGoToLine = null;
static internal frmGoToLine frmGoToLine = null;
static internal int idFrmGotToLine = -1;

// toolbar icons
Expand Down Expand Up @@ -179,6 +187,140 @@ static internal void PluginCleanUp()
{
Win32.WritePrivateProfileString(sectionName, keyName, doCloseTag ? "1" : "0", iniFilePath);
}

/// <summary>
/// Apply dark mode (or re-apply light mode) to the controls of any form.<br></br>
/// This method currently supports colorizing the following types of controls:<br></br>
/// - Buttons<br></br>
/// - Labels<br></br>
/// - LinkLabels<br></br>
/// - ComboBoxes<br></br>
/// - CheckBoxes<br></br>
/// - ListBoxes<br></br>
/// - TreeViews<br></br>
/// Feel free to add more as needed.<br></br>
/// TODO: Figure out best way to customize border colors of controls.
/// https://stackoverflow.com/questions/1445472/how-to-change-the-form-border-color-c
/// may be a lead.
/// </summary>
/// <param name="form">a Windows Form</param>
/// <param name="isDark">is Notepad++ dark mode on?</param>
static internal void ToggleDarkMode(Control ctrl, bool isDark)
{
if (ctrl == null)
return;
IntPtr themePtr = notepad.GetDarkModeColors();
if (isDark && themePtr == IntPtr.Zero)
return;
var theme = (DarkModeColors)Marshal.PtrToStructure(themePtr, typeof(DarkModeColors));
if (ctrl is Form form)
{
foreach (Form childForm in form.OwnedForms)
{
// allow possibility that some forms will have other child forms
// JsonTools does this in a couple of places
ToggleDarkMode(childForm, isDark);
}
}
if (isDark)
{
ctrl.BackColor = NppDarkMode.BGRToColor(theme.Background);
ctrl.ForeColor = NppDarkMode.BGRToColor(theme.Text);
}
else
{
ctrl.ResetForeColor();
ctrl.ResetBackColor();
}
foreach (Control child in ctrl.Controls)
{
if (isDark)
{
// this doesn't actually make disabled controls have different colors
// windows forms don't make it easy for the user to choose the
// color of a disabled control. See https://stackoverflow.com/questions/136129/windows-forms-how-do-you-change-the-font-color-for-a-disabled-label
var textTheme = child.Enabled ? theme.Text : theme.DisabledText;
Color foreColor = NppDarkMode.BGRToColor(textTheme);
Color backColor = NppDarkMode.BGRToColor(theme.PureBackground);
Color InBetween = Color.FromArgb(
foreColor.R / 4 + 3 * backColor.R / 4,
foreColor.G / 4 + 3 * backColor.G / 4,
foreColor.B / 4 + 3 * backColor.B / 4
);
if (child is GroupBox)
ToggleDarkMode(child, isDark);
else if (child is Button btn)
{
btn.BackColor = NppDarkMode.BGRToColor(theme.SofterBackground);
btn.ForeColor = foreColor;
}
else if (child is LinkLabel llbl)
{
llbl.BackColor = NppDarkMode.BGRToColor(theme.ErrorBackground);
llbl.ForeColor = NppDarkMode.BGRToColor(theme.DarkerText);
llbl.LinkColor = NppDarkMode.BGRToColor(theme.LinkText);
llbl.ActiveLinkColor = NppDarkMode.BGRToColor(theme.Text);
llbl.VisitedLinkColor = NppDarkMode.BGRToColor(theme.DarkerText);
}
// other common text-based controls
else if (child is TextBox
|| child is Label
|| child is ListBox
|| child is ComboBox)
{
child.BackColor = backColor;
child.ForeColor = foreColor;
}
else if (child is TreeView tv)
{
tv.BackColor = NppDarkMode.BGRToColor(theme.HotBackground);
tv.ForeColor = foreColor;
}
else if (child is DataGridView dgv)
{
dgv.EnableHeadersVisualStyles = false;
dgv.BackgroundColor = InBetween;
dgv.ForeColor = foreColor;
dgv.GridColor = foreColor;
dgv.ColumnHeadersDefaultCellStyle.ForeColor = foreColor;
dgv.ColumnHeadersDefaultCellStyle.BackColor = backColor;
dgv.RowHeadersDefaultCellStyle.ForeColor = foreColor;
dgv.RowHeadersDefaultCellStyle.BackColor = backColor;
dgv.RowsDefaultCellStyle.ForeColor = foreColor;
dgv.RowsDefaultCellStyle.BackColor = backColor;
}
else
{
// other controls I haven't thought of yet
child.BackColor = NppDarkMode.BGRToColor(theme.SofterBackground);
child.ForeColor = foreColor;
}
}
else // normal light mode
{
child.ResetForeColor();
child.ResetBackColor();
if (child is GroupBox)
ToggleDarkMode(child, isDark);
if (child is LinkLabel llbl)
{
llbl.LinkColor = Color.Blue;
llbl.ActiveLinkColor = Color.Red;
llbl.VisitedLinkColor = Color.Purple;
}
else if (child is DataGridView dgv)
{
dgv.EnableHeadersVisualStyles = true;
dgv.BackgroundColor = SystemColors.ControlDark;
dgv.ForeColor = SystemColors.ControlText;
dgv.GridColor = SystemColors.ControlLight;
dgv.RowsDefaultCellStyle.ForeColor = SystemColors.ControlText;
dgv.RowsDefaultCellStyle.BackColor = SystemColors.Window;
}
}
}
Marshal.FreeHGlobal(themePtr);
}
#endregion

#region " Menu functions "
Expand Down Expand Up @@ -443,6 +585,7 @@ static void DockableDlgDemo()
Win32.SendMessage(PluginBase.nppData._nppHandle, (uint) NppMsg.NPPM_SETMENUITEMCHECK, PluginBase._funcItems.Items[idFrmGotToLine]._cmdID, 0);
}
}
ToggleDarkMode(frmGoToLine, notepad.IsDarkModeEnabled());
frmGoToLine.textBox1.Focus();
}

Expand Down
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