From b2b9f343b4199bd5cce8babbee546a7679c649b1 Mon Sep 17 00:00:00 2001
From: Nemh <nemofournier@gmail.com>
Date: Sat, 6 Jun 2015 19:45:38 +0200
Subject: [PATCH] Scrolling implemented for big pretty print outputs

---
 console.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++-------
 print.cpp |  4 +--
 2 files changed, 69 insertions(+), 11 deletions(-)

diff --git a/console.c b/console.c
index 898ed65..58b773b 100644
--- a/console.c
+++ b/console.c
@@ -1077,23 +1077,81 @@ int Console_Disp()
 void Console_Draw_TeX_Popup(unsigned char* str, int width, int height)
 {
 	DISPBOX popup;
+	DISPBOX temp;
+	unsigned char arrows[4*3] = {0xE6, 0x9A, '\0', 0xE6, 0x9B, '\0', 0xE6, 0x9C, '\0', 0xE6, 0x9D, '\0'};
 	int margin = 2, border = 1;
+	int scroll_lateral = 0, scroll_lateral_flag = 0, scroll_vertical = 0, scroll_vertical_flag = 0;
 	int key;
 
-	popup.left = 64 - width/2 - margin - border;
-	popup.right = 128 - popup.left;
+	if(width > 115) {
+		popup.left = 5;
+		popup.right = 122;
 
-	popup.top = 32 - height/2 - margin - border;
-	popup.bottom = 64 - popup.top;
+		scroll_lateral_flag = 1;
+	}
+	else {
+		popup.left = 64 - width/2 - margin - border;
+		popup.right = 128 - popup.left;
+	}
+
+	if(height > 50) {
+		popup.top = 5;
+		popup.bottom = 57;
+
+		scroll_vertical_flag = 1;
+	}
+	else {
+		popup.top = 32 - height/2 - margin - border;
+		popup.bottom = 64 - popup.top;
+	}
+
+	/*temp.left = 0; temp.top = 0; temp.right = 128; temp.bottom = 64;
+	Bdisp_ReadArea_VRAM (&temp, vram_copy);*/
 	
-	Bdisp_AreaClr_VRAM(&popup);
-	Bdisp_AreaReverseVRAM(popup.left, popup.top, popup.right, popup.bottom);
+	while(key != KEY_CTRL_EXIT) {
+		Bdisp_AreaClr_VRAM(&popup);
+		Bdisp_AreaReverseVRAM(popup.left, popup.top, popup.right, popup.bottom);
 
-	Bdisp_AreaReverseVRAM(popup.left + border, popup.top + border, popup.right - border, popup.bottom - border);
+		Bdisp_AreaReverseVRAM(popup.left + border, popup.top + border, popup.right - border, popup.bottom - border);
 
-	TeX_drawComplex((char*)str, popup.left+border+margin, popup.top+border+margin); 
+		TeX_drawComplex((char*)str, popup.left+border+margin + scroll_lateral, popup.top+border+margin + scroll_vertical); 
 
-	GetKey(&key);
+		if(scroll_lateral_flag ||scroll_vertical_flag) {
+			temp.left = 0; temp.top = 0; temp.right = popup.left-1; temp.bottom = popup.bottom;
+			Bdisp_AreaClr_VRAM(&temp);
+			temp.left = 0; temp.top = popup.bottom+1; temp.right = 127; temp.bottom = 63;
+			Bdisp_AreaClr_VRAM(&temp);
+			temp.left = popup.left-1; temp.top = 0; temp.right = 127; temp.bottom = popup.top-1;
+			Bdisp_AreaClr_VRAM(&temp);
+			temp.left = popup.right+1; temp.top = popup.top-1; temp.right = 127; temp.bottom = 63;
+			Bdisp_AreaClr_VRAM(&temp);
+
+			if(scroll_lateral < 0) PrintMini(1, 30, arrows, 0);
+			if(scroll_lateral > -(width - 115)) PrintMini(123, 30, arrows + 3, 0);
+			if(scroll_vertical < 0) PrintMini(61, 0, arrows + 6, 0);
+			if(scroll_vertical > -(height - 47)) PrintMini(61, 58, arrows + 9, 0);
+
+			Bdisp_DrawLineVRAM(popup.left, popup.top, popup.left, popup.bottom);
+			Bdisp_DrawLineVRAM(popup.left, popup.top, popup.right, popup.top);
+			Bdisp_DrawLineVRAM(popup.left, popup.bottom, popup.right, popup.bottom);
+			Bdisp_DrawLineVRAM(popup.right, popup.top, popup.right, popup.bottom);
+		}
+
+		GetKey(&key);
+
+		if(scroll_lateral_flag) {
+			if(key == KEY_CTRL_LEFT && scroll_lateral < 0) scroll_lateral += 5;
+			if(key == KEY_CTRL_RIGHT && scroll_lateral > -(width - 115)) scroll_lateral -= 5;
+
+			if(scroll_lateral > 0) scroll_lateral = 0;
+		} 
+		if(scroll_vertical_flag) {
+			if(key == KEY_CTRL_UP && scroll_vertical < 0) scroll_vertical += 3;
+			if(key == KEY_CTRL_DOWN && scroll_vertical > -(height - 47)) scroll_vertical -= 3;
+
+			if(scroll_vertical > 0) scroll_vertical = 0;
+		}
+	}
 }
 #endif
 
diff --git a/print.cpp b/print.cpp
index ea43907..3ea1c76 100644
--- a/print.cpp
+++ b/print.cpp
@@ -45,11 +45,11 @@ printline(U *p)
 	print_expr(p);
 #ifdef TEX
 	TeX_sizeComplex(edit_line, &width, &height, &baseline);
-	if(width > MAX_TEX_WIDTH || height > MAX_TEX_HEIGHT) {
+	/*if(width > MAX_TEX_WIDTH || height > MAX_TEX_HEIGHT) {
 		tex_flag = 0;
 		Console_Clear_EditLine();
 		print_expr(p);
-	}
+	}*/
 
 	tex_flag = old_tex_flag;
 #endif