From a897ce08ed162eff3e06db533c490c4dd5b23e54 Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Wed, 10 Oct 2012 11:32:04 +0800
Subject: [PATCH] AxWin3 - Adding RichText rendering, no sscanf so doesn't
 compile

---
 .../axwin3_src/WM/renderers/richtext.c        | 146 +++++++++++++++++-
 .../axwin3_src/libaxwin3.so_src/r_richtext.c  |   2 +-
 2 files changed, 145 insertions(+), 3 deletions(-)

diff --git a/Usermode/Applications/axwin3_src/WM/renderers/richtext.c b/Usermode/Applications/axwin3_src/WM/renderers/richtext.c
index 35fd5ef9..ecdb40e9 100644
--- a/Usermode/Applications/axwin3_src/WM/renderers/richtext.c
+++ b/Usermode/Applications/axwin3_src/WM/renderers/richtext.c
@@ -9,6 +9,29 @@
 #include <wm_renderer.h>
 #include <richtext_messages.h>
 
+#define LINES_PER_BLOCK	30
+
+// === TYPES ===
+typedef struct sRichText_LineBlock
+{
+	struct sRichText_LineBlock	*Next;
+	 int	FirstLine;
+	char	*Lines[LINES_PER_BLOCK];
+} tRichText_LineBlock;
+typedef struct sRichText_Window
+{
+	 int	DispLines, DispCols;
+	 int	FirstVisRow, FirstVisCol;
+	 int	nLines, nCols;
+	 int	CursorRow, CursorCol;
+	tRichText_LineBlock	FirstBlock;
+	tColour	DefaultFG;
+	tColour	DefaultBG;
+	tFont	*Font;
+	
+	short	LineHeight;
+} tRichText_Window;
+
 // === PROTOTYPES ===
  int	Renderer_RichText_Init(void);
 tWindow	*Renderer_RichText_Create(int Flags);
@@ -32,12 +55,131 @@ int Renderer_RichText_Init(void)
 
 tWindow *Renderer_RichText_Create(int Flags)
 {
-	return NULL;
+	tRichText_Window	*info;
+	tWindow *ret = WM_CreateWindowStruct( sizeof(*info) );
+	if(!ret)	return NULL;
+	info = ret->RendererInfo;
+	// Everything starts at zero?
+	return ret;
+}
+
+inline int Renderer_RichText_RenderText_Act(tWindow *Window, tRichText_Window *info, int X, int Row, const char *Text, int Bytes, tColour FG, tColour BG)
+{
+	 int	rwidth;
+	// TODO: Fill only what is needed
+	WM_Render_DrawRect(Window, X, Row*info->LineHeight,
+		Window->W - X, info->LineHeight,
+		BG
+		);
+	rwidth = WM_Render_DrawText(Window,
+		X, Row*info->LineHeight,
+		Window->W - X, info->LineHeight,
+		info->Font, FG,
+		Text, Bytes
+		);
+	return rwidth;
+}
+
+void Renderer_RichText_RenderText(tWindow *Window, int Line, const char *Text)
+{
+	tRichText_Window	*info = Window->RendererInfo;
+	tColour	fg = info->DefaultFG;
+	tColour	bg = info->DefaultBG;
+	 int	bBold = 0;
+	 int	bULine = 0;
+	 int	bItalic = 0;
+	 int	bRender = 0;
+	 int	curx = 0;
+	const char	*oldtext = Text;
+	
+	for( int i = 0; i < info->FirstVisCol + info->DispCols; i ++ )
+	{
+		char	ch, flags;
+		 int	len;
+
+		if( i == info->FirstVisCol )
+			bRender = 1;
+
+		ch = *Text++;
+		if( ch == 0 )	break;
+		if( ch <=3 && bRender ) {
+			// Render previous characters
+			curx += Renderer_RichText_RenderText_Act(Window, info, curx, Line, oldtext, Text - oldtext, fg, bg);
+			oldtext = Text;
+		}
+		switch(ch)
+		{
+		case 1:	// FG Select (\1 RRGGBB)
+			len = sscanf(Text, "%6x", &fg);
+			if( len != 6 ) {
+				// Bad client
+			}
+			Text += len;
+			break ;
+		case 2:	// BG Select (\2 RRGGBB)
+			len = sscanf(Text, "%6x", &bg);
+			if( len != 6 ) {
+				// Bad client
+			}
+			Text += len;
+			break ;
+		case 3:	// Flagset (0,it,uline,bold)
+			len = sscanf(Text, "%1x", &flags);
+			if( len != 1 ) {
+				// Bad client
+			}
+			Text += len;
+			bItalic = !!(flags & (1 << 2));
+			bULine = !!(flags & (1 << 1));
+			bBold = !!(flags & (1 << 0));
+			break ;
+		default: // Any char, nop
+			break;
+		}
+	}
+	curx += Renderer_RichText_RenderText_Act(Window, info, curx, Line, oldtext, Text - oldtext, fg, bg);
+	WM_Render_DrawRect(Window, curx, Line * info->LineHeight, Window->W - curx, info->LineHeight, info->DefaultBG);
 }
 
 void Renderer_RichText_Redraw(tWindow *Window)
 {
-	return;
+	tRichText_Window	*info = Window->RendererInfo;
+	 int	i;
+	tRichText_LineBlock	*lines = &info->FirstBlock;
+	
+	// Locate the first line block
+	for( i = info->FirstVisRow; i > LINES_PER_BLOCK && lines; i -= LINES_PER_BLOCK )
+		lines = lines->Next;
+
+	for( i = 0; i < info->DispLines && lines; i ++ )
+	{
+		if( i >= info->nLines - info->FirstVisRow )
+			break;
+		// TODO: Dirty rectangles?
+		WM_Render_DrawRect(Window,
+			0, i*info->LineHeight,
+			Window->W, info->LineHeight,
+			info->DefaultBG
+			);
+		// TODO: Horizontal scrolling?
+		// TODO: Formatting
+		//Renderer_RichText_RenderText(Window, i, lines->Lines[i % LINES_PER_BLOCK]);
+		WM_Render_DrawText(Window,
+			0, i*info->LineHeight,
+			Window->W, info->LineHeight,
+			info->Font, info->DefaultFG,
+			lines->Lines[i % LINES_PER_BLOCK],
+			-1);
+	
+		if( (i + 1) % LINES_PER_BLOCK == 0 )
+			lines = lines->Next;
+	}
+	// Clear out i -- info->DispLines
+	WM_Render_DrawRect(Window,
+		0, i*info->LineHeight,
+		Window->W, (info->DispLines-i)*info->LineHeight,
+		info->DefaultBG
+		);
 }
 
 int Renderer_RichText_HandleMessage(tWindow *Target, int Msg, int Len, const void *Data)
diff --git a/Usermode/Applications/axwin3_src/libaxwin3.so_src/r_richtext.c b/Usermode/Applications/axwin3_src/libaxwin3.so_src/r_richtext.c
index 9ef16806..74b437b1 100644
--- a/Usermode/Applications/axwin3_src/libaxwin3.so_src/r_richtext.c
+++ b/Usermode/Applications/axwin3_src/libaxwin3.so_src/r_richtext.c
@@ -15,7 +15,7 @@ typedef struct sRichText_Window
 {
 	tAxWin3_RichText_KeyHandler	KeyCallback;
 	tAxWin3_RichText_MouseHandler	MouseCallback;
-//	tAxWin3_RichText_LineHandler	LineHandler;
+	tAxWin3_RichText_LineHandler	LineHandler;
 } tRichText_Window;
 
 // === CODE ===
-- 
2.20.1