hello world

neo/ui/FieldWindow.cpp

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+/*
+===========================================================================
+
+Doom 3 GPL Source Code
+Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company. 
+
+This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).  
+
+Doom 3 Source Code is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Doom 3 Source Code is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Doom 3 Source Code.  If not, see <http://www.gnu.org/licenses/>.
+
+In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code.  If not, please request a copy in writing from id Software at the address below.
+
+If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
+
+===========================================================================
+*/
+
+#include "../idlib/precompiled.h"
+#pragma hdrstop
+
+#include "DeviceContext.h"
+#include "Window.h"
+#include "UserInterfaceLocal.h"
+#include "FieldWindow.h"
+
+
+void idFieldWindow::CommonInit() {
+	cursorPos = 0;
+	lastTextLength = 0;
+	lastCursorPos = 0;
+	paintOffset = 0;
+	showCursor = false;
+}
+
+idFieldWindow::idFieldWindow(idDeviceContext *d, idUserInterfaceLocal *g) : idWindow(d, g) {
+	dc = d;
+	gui = g;
+	CommonInit();
+}
+
+idFieldWindow::idFieldWindow(idUserInterfaceLocal *g) : idWindow(g) {
+	gui = g;
+	CommonInit();
+}
+
+idFieldWindow::~idFieldWindow() {
+
+}
+
+bool idFieldWindow::ParseInternalVar(const char *_name, idParser *src) {
+	if (idStr::Icmp(_name, "cursorvar") == 0) {
+		ParseString(src, cursorVar);
+		return true;
+	}
+	if (idStr::Icmp(_name, "showcursor") == 0) {
+		showCursor = src->ParseBool();
+		return true;
+	}
+	return idWindow::ParseInternalVar(_name, src);
+}
+
+
+void idFieldWindow::CalcPaintOffset(int len) {
+	lastCursorPos = cursorPos;
+	lastTextLength = len;
+	paintOffset = 0;
+	int tw = dc->TextWidth(text, textScale, -1);
+	if (tw < textRect.w) {
+		return;
+	}
+	while (tw > textRect.w && len > 0) {
+		tw = dc->TextWidth(text, textScale, --len);
+		paintOffset++;
+	}
+}
+
+
+void idFieldWindow::Draw(int time, float x, float y) {
+	float scale = textScale;
+	int len = text.Length();
+	cursorPos = gui->State().GetInt( cursorVar );
+	if (len != lastTextLength || cursorPos != lastCursorPos) {
+		CalcPaintOffset(len);
+	}
+	idRectangle rect = textRect;
+	if (paintOffset >= len) {
+		paintOffset = 0;
+	}
+	if (cursorPos > len) {
+		cursorPos = len;
+	}
+	dc->DrawText(&text[paintOffset], scale, 0, foreColor, rect, false, ((flags & WIN_FOCUS) || showCursor) ? cursorPos - paintOffset : -1);
+}
+