From 6d8d8b9ab9c651c765b4026c6d845202017e9ea3 Mon Sep 17 00:00:00 2001
From: asc <ansicheng@163.com>
Date: Fri, 3 Mar 2023 23:48:22 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BA=8C=E8=BF=9B=E5=88=B6=E6=96=87=E4=BB=B6?=
 =?UTF-8?q?=E9=80=89=E6=8B=A9=E4=BA=8C=E8=BF=9B=E5=88=B6=E9=83=A8=E5=88=86?=
 =?UTF-8?q?=E5=92=8C=E6=96=87=E6=9C=AC=E9=83=A8=E5=88=86=E5=90=8C=E6=AD=A5?=
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---
 src/scintillahexeditview.cpp | 128 +++++++++++++++++++++++++++++++++++
 src/scintillahexeditview.h   |  14 ++++
 2 files changed, 142 insertions(+)

diff --git a/src/scintillahexeditview.cpp b/src/scintillahexeditview.cpp
index c8da9b2..18f0ea1 100755
--- a/src/scintillahexeditview.cpp
+++ b/src/scintillahexeditview.cpp
@@ -122,6 +122,134 @@ void ScintillaHexEditView::dropEvent(QDropEvent* e)
 	//qDebug() << ui.leftSrc->geometry() << ui.rightSrc->geometry() << QCursor::pos() << this->mapFromGlobal(QCursor::pos());
 }
 
+void ScintillaHexEditView::mouseMoveEvent(QMouseEvent* e)
+{
+	if (property("type").toInt() == HEX_TYPE && selecting)
+	{
+		long from, to;
+		int r1, c1, r2, c2;
+		int begin, end;
+		const int col_hex_start = 9;
+		const int col_hex_finish = 56;
+		const int col_text_start = 57;
+		const int col_text_finish = 72;
+		const int col_num = 75;
+
+		m_SelTo = Scintilla::Point::FromInts(e->x(), e->y());
+
+		from = execute(SCI_POSITIONFROMPOINT, m_SelFrom.x, m_SelFrom.y);
+		to = execute(SCI_POSITIONFROMPOINT, m_SelTo.x, m_SelTo.y);
+
+		lineIndexFromPosition(from, &r1, &c1);
+		lineIndexFromPosition(to, &r2, &c2);
+
+		execute(SCI_CLEARSELECTIONS);
+
+		if (r1 < 0 || c1 < 0 || r2 < 0 || c2 < 0)
+			return;
+
+		
+		if (c1 < col_text_start || c1 > col_text_finish)
+		{
+			//选择二进制区域
+			for (int i = r1; i <= r2; ++i)
+			{
+				//每行hex显示区域
+				if (i == r1)
+				{
+					if (c1 < col_hex_start)
+						begin = col_hex_start;
+					else if (c1 > col_hex_finish)
+						begin = col_hex_finish;
+					else begin = c1 / 3 * 3;
+				}
+				else
+					begin = col_hex_start;
+
+				if (i == r2)
+				{
+					if (c2 < col_hex_start)
+						end = col_hex_start;
+					else if (c2 > col_hex_finish)
+						end = col_hex_finish;
+					else end = c2 / 3 * 3 + 2;
+				}
+				else
+					end = col_hex_finish;
+
+
+				for (int j = begin; j < end; j += 3)
+				{
+					execute(SCI_ADDSELECTION, i * col_num + j, i * col_num + j + 2);
+					execute(SCI_ADDSELECTION, i * col_num + col_text_start + (j - col_hex_start) / 3,
+						i * col_num + col_text_start + (j - col_hex_start) / 3 + 1);
+				}
+			}
+		}
+		else
+		{
+			//选择字符区域
+			for (int i = r1; i <= r2; ++i)
+			{
+				//每行字符显示区域
+				if (i == r1)
+				{
+					if (c1 < col_text_start)
+						begin = col_text_start;
+					else if (c1 > col_text_finish)
+						begin = col_text_finish;
+					else begin = c1;
+				}
+				else
+					begin = col_text_start;
+
+				if (i == r2)
+				{
+					if (c2 < col_text_start)
+						end = col_text_start;
+					else if (c2 > col_text_finish)
+						end = col_text_finish;
+					else end = c2;
+				}
+				else
+					end = col_text_finish;
+
+
+				for (int j = begin; j <= end; ++j)
+				{
+					execute(SCI_ADDSELECTION, i * col_num + col_hex_start + (j - col_text_start) * 3, 
+						i * col_num + col_hex_start + (j - col_text_start) * 3 + 2);
+					execute(SCI_ADDSELECTION, i * col_num + j, i * col_num + j + 1);
+				}
+			}
+		}
+		return;
+	}
+	QsciScintillaBase::mouseMoveEvent(e);
+}
+
+void ScintillaHexEditView::mousePressEvent(QMouseEvent* e)
+{
+	if (property("type").toInt() == HEX_TYPE && !selecting)
+	{
+		execute(SCI_CLEARSELECTIONS);
+		selecting = true;
+		m_SelFrom = Scintilla::Point::FromInts(e->x(), e->y());
+		return;
+	}
+	QsciScintillaBase::mousePressEvent(e);
+}
+
+void ScintillaHexEditView::mouseReleaseEvent(QMouseEvent* e)
+{
+	if (property("type").toInt() == HEX_TYPE && selecting)
+	{
+		selecting = false;
+		return;
+	}
+	QsciScintillaBase::mouseReleaseEvent(e);
+}
+
 
 void ScintillaHexEditView::updateThemes()
 {
diff --git a/src/scintillahexeditview.h b/src/scintillahexeditview.h
index 26b6c3f..5154416 100755
--- a/src/scintillahexeditview.h
+++ b/src/scintillahexeditview.h
@@ -2,6 +2,7 @@
 
 #include <qsciscintilla.h>
 #include <Scintilla.h>
+#include <Platform.h>
 #include <QDragEnterEvent>
 #include <QDropEvent>
 
@@ -33,6 +34,14 @@ protected:
 	void dragEnterEvent(QDragEnterEvent * event);
 	void dropEvent(QDropEvent * e);
 
+	//! Re-implemented to handle mouse moves.
+	virtual void mouseMoveEvent(QMouseEvent* e);
+
+	//! Re-implemented to handle mouse presses.
+	virtual void mousePressEvent(QMouseEvent* e);
+
+	//! Re-implemented to handle mouse releases.
+	virtual void mouseReleaseEvent(QMouseEvent* e);
 
 private:
 	static bool _SciInit;
@@ -41,4 +50,9 @@ private:
 	SCINTILLA_PTR  m_pScintillaPtr = 0;
 
 	CCNotePad* m_NoteWin;
+
+	bool selecting = false;
+
+	Scintilla::Point m_SelFrom;
+	Scintilla::Point m_SelTo;
 };