From dae91af92db2b316cec2db17328e92306b915753 Mon Sep 17 00:00:00 2001
From: B Stack <bgstack15@gmail.com>
Date: Tue, 8 Dec 2020 08:13:55 -0500
Subject: add upstream 11.4

---
 wx+/no_flicker.h | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 79 insertions(+), 2 deletions(-)

(limited to 'wx+/no_flicker.h')

diff --git a/wx+/no_flicker.h b/wx+/no_flicker.h
index 03969c00..53e47bb5 100644
--- a/wx+/no_flicker.h
+++ b/wx+/no_flicker.h
@@ -7,13 +7,18 @@
 #ifndef NO_FLICKER_H_893421590321532
 #define NO_FLICKER_H_893421590321532
 
+#include <zen/string_tools.h>
+#include <zen/scope_guard.h>
 #include <wx/textctrl.h>
 #include <wx/stattext.h>
+#include <wx/richtext/richtextctrl.h>
+#include <wx/wupdlock.h>
 
 
 namespace zen
 {
-inline
+namespace
+{
 void setText(wxTextCtrl& control, const wxString& newText, bool* additionalLayoutChange = nullptr)
 {
     const wxString& label = control.GetValue(); //perf: don't call twice!
@@ -24,7 +29,7 @@ void setText(wxTextCtrl& control, const wxString& newText, bool* additionalLayou
         control.ChangeValue(newText);
 }
 
-inline
+
 void setText(wxStaticText& control, wxString newText, bool* additionalLayoutChange = nullptr)
 {
 
@@ -35,6 +40,78 @@ void setText(wxStaticText& control, wxString newText, bool* additionalLayoutChan
     if (label != newText)
         control.SetLabel(newText);
 }
+
+
+void setTextWithUrls(wxRichTextCtrl& richCtrl, const wxString& newText)
+{
+    enum class BlockType
+    {
+        text,
+        url,
+    };
+    std::vector<std::pair<BlockType, wxString>> blocks;
+
+    for (auto it = newText.begin();;)
+    {
+        const wchar_t urlPrefix[] = L"https://";
+        const auto itUrl = std::search(it, newText.end(),
+                                       urlPrefix, urlPrefix + strLength(urlPrefix));
+        if (it != itUrl)
+            blocks.emplace_back(BlockType::text, wxString(it, itUrl));
+
+        if (itUrl == newText.end())
+            break;
+
+        auto itUrlEnd = std::find_if(itUrl, newText.end(), [](wchar_t c) { return isWhiteSpace(c); });
+        blocks.emplace_back(BlockType::url, wxString(itUrl, itUrlEnd));
+        it = itUrlEnd;
+    }
+    richCtrl.BeginSuppressUndo();
+    ZEN_ON_SCOPE_EXIT(richCtrl.EndSuppressUndo());
+
+    //fix mouse scroll speed: why the FUCK is this even necessary!
+    richCtrl.SetLineHeight(richCtrl.GetCharHeight());
+
+    //get rid of margins and space between text blocks/"paragraphs"
+    richCtrl.SetMargins({0, 0});
+    richCtrl.BeginParagraphSpacing(0, 0);
+    ZEN_ON_SCOPE_EXIT(richCtrl.EndParagraphSpacing());
+
+    richCtrl.Clear();
+
+    if (std::any_of(blocks.begin(), blocks.end(), [](const auto& item) { return item.first == BlockType::url; }))
+    {
+        wxRichTextAttr urlStyle;
+        urlStyle.SetTextColour(*wxBLUE);
+        urlStyle.SetFontUnderlined(true);
+
+        for (const auto& [type, text] : blocks)
+            switch (type)
+            {
+                case BlockType::text:
+                    richCtrl.WriteText(text);
+                    break;
+
+                case BlockType::url:
+                    richCtrl.BeginStyle(urlStyle);
+                    ZEN_ON_SCOPE_EXIT(richCtrl.EndStyle());
+                    richCtrl.BeginURL(text);
+                    ZEN_ON_SCOPE_EXIT(richCtrl.EndURL());
+                    richCtrl.WriteText(text);
+                    break;
+            }
+
+        //register only once! => use a global function pointer, so that Unbind() works correctly:
+        using LaunchUrlFun = void(*)(wxTextUrlEvent& event);
+        static const LaunchUrlFun launchUrl = [](wxTextUrlEvent& event) { wxLaunchDefaultBrowser(event.GetString()); };
+
+        [[maybe_unused]] const bool unbindOk = richCtrl.Unbind(wxEVT_TEXT_URL, launchUrl);
+        richCtrl.Bind(wxEVT_TEXT_URL, launchUrl);
+    }
+    else
+        richCtrl.WriteText(newText);
+}
+}
 }
 
 #endif //NO_FLICKER_H_893421590321532
-- 
cgit