1 files changed, 220 insertions, 0 deletions
diff --git a/engines/sherlock/tattoo/widget_tooltip.cpp b/engines/sherlock/tattoo/widget_tooltip.cpp
new file mode 100644
index 0000000000..b1c13c7a29
--- /dev/null
+++ b/engines/sherlock/tattoo/widget_tooltip.cpp
@@ -0,0 +1,220 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "sherlock/tattoo/widget_tooltip.h"
+#include "sherlock/tattoo/tattoo_map.h"
+#include "sherlock/tattoo/tattoo_user_interface.h"
+#include "sherlock/tattoo/tattoo.h"
+
+namespace Sherlock {
+
+namespace Tattoo {
+
+#define MAX_TOOLTIP_WIDTH 150
+
+void WidgetTooltipBase::draw() {
+	Screen &screen = *_vm->_screen;
+
+	// If there was a previously drawn frame in a different position that hasn't yet been erased, then erase it
+	if (_oldBounds.width() > 0 && _oldBounds != _bounds)
+		erase();
+
+	if (_bounds.width() > 0 && !_surface.empty()) {
+		restrictToScreen();
+
+		// Blit the affected area to the screen
+		screen.slamRect(_bounds);
+		
+		// Draw the widget directly onto the screen. Unlike other widgets, we don't draw to the back buffer,
+		// since nothing should be drawing on top of tooltips, so there's no need to store in the back buffer
+		screen.transBlitFrom(_surface, Common::Point(_bounds.left - screen._currentScroll.x, 
+			_bounds.top - screen._currentScroll.y));
+
+		// Store a copy of the drawn area for later erasing
+		_oldBounds = _bounds;
+	}
+}
+
+void WidgetTooltipBase::erase() {
+	Screen &screen = *_vm->_screen;
+
+	if (_oldBounds.width() > 0) {
+		// Restore the affected area from the back buffer to the screen
+		screen.slamRect(_oldBounds);
+
+		// Reset the old bounds so it won't be erased again
+		_oldBounds = Common::Rect(0, 0, 0, 0);
+	}
+}
+
+/*----------------------------------------------------------------*/
+
+WidgetTooltip::WidgetTooltip(SherlockEngine *vm) : WidgetTooltipBase (vm) {
+}
+
+void WidgetTooltip::setText(const Common::String &str) {
+	Events &events = *_vm->_events;
+	Common::Point mousePos = events.mousePos();
+	bool reset = false;
+	
+	// Make sure that the description is present
+	if (!str.empty()) {
+		int width = _surface.stringWidth(str) + 2;
+		int height = _surface.stringHeight(str) + 2;
+		Common::String line1 = str, line2 = "";
+
+		// See if we need to split it into two lines
+		if (width > MAX_TOOLTIP_WIDTH) {
+			// Go forward word by word to find out where to split the line
+			const char *s = str.c_str();
+			const char *space = nullptr;
+			int dif = 10000;
+
+			for (;;) {
+				// Find end of next word
+				s = strchr(s + 1, ' ');
+
+				if (s == nullptr) {
+					// Reached end of string
+					if (space != nullptr) {
+						line1 = Common::String(str.c_str(), space);
+						line2 = Common::String(space + 1);
+						height = _surface.stringHeight(line1) + _surface.stringHeight(line2) + 4;
+					}
+					break;
+				}
+
+				// Found space separating words, so see what width the string up to now is
+				Common::String tempLine1 = Common::String(str.c_str(), s);
+				Common::String tempLine2 = Common::String(s + 1);
+				int width1 = _surface.stringWidth(tempLine1);
+				int width2 = _surface.stringWidth(tempLine2);
+
+				// See if we've found a split point that results in a less overall width
+				if (ABS(width1 - width2) < dif) {
+					// Found a better split point
+					dif = ABS(width1 - width2);
+					space = s;
+					line1 = tempLine1;
+					line2 = tempLine2;
+				}
+			}
+		} else {
+			// No line split needed
+			height = _surface.stringHeight(str) + 2;
+		}
+
+		// Reallocate the text surface with the new size
+		_surface.create(width, height);
+		_surface.fill(TRANSPARENCY);
+
+		if (line2.empty()) {
+			// Only a single line
+			_surface.writeFancyString(str, Common::Point(0, 0), BLACK, INFO_TOP);
+		} else {
+			// Two lines to display
+			int xp, yp;
+			xp = (width - _surface.stringWidth(line1) - 2) / 2;
+			_surface.writeFancyString(line1, Common::Point(xp, 0), BLACK, INFO_TOP);
+
+			xp = (width - _surface.stringWidth(line2) - 2) / 2;
+			yp = _surface.stringHeight(line1) + 2;
+			_surface.writeFancyString(line2, Common::Point(xp, yp), BLACK, INFO_TOP);
+		}
+
+		// Set the initial display position for the tooltip text
+		int tagX = mousePos.x - width / 2;
+		int tagY = mousePos.y - height;
+
+		_bounds = Common::Rect(tagX, tagY, tagX + width, tagY + height);
+	} else {
+		reset = true;
+	}
+
+	if (reset && !_surface.empty()) {
+		_surface.free();
+	}
+}
+
+void WidgetTooltip::handleEvents() {
+	Events &events = *_vm->_events;
+	Common::Point mousePos = events.mousePos();
+
+	// Set the new position for the tooltip
+	int xp = mousePos.x - _bounds.width() / 2;
+	int yp = mousePos.y - _bounds.height();
+
+	_bounds.moveTo(xp, yp);
+}
+
+/*----------------------------------------------------------------*/
+
+void WidgetSceneTooltip::handleEvents() {
+	Events &events = *_vm->_events;
+	People &people = *_vm->_people;
+	Scene &scene = *_vm->_scene;
+	TattooUserInterface &ui = *(TattooUserInterface *)_vm->_ui;
+	Common::Point mousePos = events.mousePos();
+
+	// See if thay are pointing at a different object and we need to regenerate the tooltip text
+	if (ui._bgFound != ui._oldBgFound || (ui._bgFound != -1 && _surface.empty()) ||
+			ui._arrowZone != ui._oldArrowZone || (ui._arrowZone != -1 && _surface.empty())) {
+		// See if there is a new object to display text for
+		if ((ui._bgFound != -1 && (ui._bgFound != ui._oldBgFound || (ui._bgFound != -1 && _surface.empty()))) ||
+				(ui._arrowZone != -1 && (ui._arrowZone != ui._oldArrowZone || (ui._arrowZone != -1 && _surface.empty())))) {
+			Common::String str;
+			if (ui._bgFound != -1) {
+				// Clear the Arrow Zone fields so it won't think we're displaying an Arrow Zone cursor
+				if (scene._currentScene != 90)  // RRR Take out the cludge for room 90
+					ui._arrowZone = ui._oldArrowZone = -1;
+
+				// Get the description string
+				str = (ui._bgFound < 1000) ? scene._bgShapes[ui._bgFound]._description :
+					people[ui._bgFound - 1000]._description;
+			} else {
+				// Get the exit zone description
+				str = scene._exits[ui._arrowZone]._dest;
+			}
+
+			setText(str.hasPrefix(" ") ? Common::String() : str);			
+		} else if ((ui._bgFound == -1 && ui._oldBgFound != -1) || (ui._arrowZone == -1 && ui._oldArrowZone != -1)) {
+			setText("");
+		}
+
+		ui._oldBgFound = ui._bgFound;
+	} else {
+
+		// Set the new position for the tooltip
+		int tagX = CLIP(mousePos.x - _bounds.width() / 2, 0, SHERLOCK_SCREEN_WIDTH - _bounds.width());
+		int tagY = MAX(mousePos.y - _bounds.height(), 0);
+
+		_bounds.moveTo(tagX, tagY);
+	}
+
+	ui._oldArrowZone = ui._arrowZone;
+
+	WidgetTooltip::handleEvents();
+}
+
+} // End of namespace Tattoo
+
+} // End of namespace Sherlock