Initial commit

engines/ultima/ultima1/u1gfx/text_cursor.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "ultima/ultima1/u1gfx/text_cursor.h"
+#include "ultima/shared/early/ultima_early.h"
+#include "ultima/shared/gfx/screen.h"
+#include "common/system.h"
+#include "graphics/managed_surface.h"
+
+namespace Ultima {
+namespace Ultima1 {
+namespace U1Gfx {
+
+#define CURSOR_ANIM_FRAME_TIME 100
+#define CURSOR_W 8
+#define CURSOR_H 8
+
+static const byte TEXT_CURSOR_FRAMES[4][8] = {
+	{ 0x66, 0x3C, 0x18, 0x66, 0x66, 0x18, 0x3C, 0x66 },
+	{ 0x3C, 0x18, 0x66, 0x24, 0x24, 0x66, 0x18, 0x3C },
+	{ 0x18, 0x66, 0x24, 0x3C, 0x3C, 0x24, 0x66, 0x18 },
+	{ 0x66, 0x24, 0x18, 0x18, 0x18, 0x18, 0x3C, 0x66 }
+};
+
+U1TextCursor::U1TextCursor(const byte &fgColor, const byte &bgColor) : _fgColor(fgColor),
+		_bgColor(bgColor), _frameNum(0), _lastFrameFrame(0) {
+	_bounds = Common::Rect(0, 0, 8, 8);
+}
+
+void U1TextCursor::update() {
+	uint32 time = getTime();
+	if (!_visible || !_fgColor || (time - _lastFrameFrame) < CURSOR_ANIM_FRAME_TIME)
+		return;
+
+	// Increment to next frame
+	_lastFrameFrame = time;
+	_frameNum = (_frameNum + 1) % 3;
+
+	markAsDirty();
+}
+
+void U1TextCursor::draw() {
+	if (!_visible)
+		return;
+
+	// Get the surface area to draw the cursor on
+	Graphics::ManagedSurface s(8, 8);
+
+	// Loop to draw the cursor
+	for (int y = 0; y < CURSOR_H; ++y) {
+		byte *lineP = (byte *)s.getBasePtr(0, y);
+		byte bits = TEXT_CURSOR_FRAMES[_frameNum][y];
+
+		for (int x = 0; x < CURSOR_W; ++x, ++lineP, bits >>= 1) {
+			*lineP = (bits & 1) ? _fgColor : _bgColor;
+		}
+	}
+
+	g_system->copyRectToScreen(s.getPixels(), s.pitch, _bounds.left, _bounds.top, _bounds.width(), _bounds.height());
+}
+
+uint32 U1TextCursor::getTime() {
+	return g_system->getMillis();
+}
+
+} // End of namespace U1Gfx
+} // End of namespace Ultima1
+} // End of namespace Ultima