Initial commit

engines/glk/selection.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 "glk/selection.h"
+#include "glk/conf.h"
+#include "glk/glk.h"
+#include "glk/windows.h"
+#include "common/system.h"
+
+namespace Glk {
+
+void Clipboard::clipboardStore(const Common::U32String &text) {
+	_text = text;
+}
+
+void Clipboard::clipboardSend(ClipSource source) {
+	g_system->setTextInClipboard(_text);
+}
+
+void Clipboard::clipboardReceive(ClipSource source) {
+	Windows &windows = *g_vm->_windows;
+
+	if (g_system->hasTextInClipboard()) {
+		Common::U32String text = g_system->getTextFromClipboard();
+		for (uint idx = 0; idx < text.size(); ++idx) {
+			uint c = text[idx];
+			if (c != '\r' && c != '\n' && c != '\b' && c != '\t')
+				windows.inputHandleKey(c);
+		}
+	}
+}
+
+/*--------------------------------------------------------------------------*/
+
+WindowMask::WindowMask() : _hor(0), _ver(0), _links(nullptr) {
+	_last.x = _last.y = 0;
+	resize(g_system->getWidth(), g_system->getHeight());
+}
+
+WindowMask::~WindowMask() {
+	clear();
+}
+
+void WindowMask::clear() {
+	for (size_t i = 0; i < _hor; i++) {
+		if (_links[i])
+			delete[] _links[i];
+	}
+
+	delete[] _links;
+}
+
+void WindowMask::resize(size_t x, size_t y) {
+	clear();
+
+	_hor = x + 1;
+	_ver = y + 1;
+
+	// allocate new storage
+	_links = new uint *[_hor];
+	if (!_links) {
+		warning("resize_mask: out of memory");
+		_hor = _ver = 0;
+		return;
+	}
+
+	for (size_t i = 0; i < _hor; i++) {
+		_links[i] = new uint[_ver];
+		if (!_links[i]) {
+			warning("resize_mask: could not allocate new memory");
+			return;
+		}
+	}
+
+	_select.left = 0;
+	_select.top = 0;
+	_select.right = 0;
+	_select.bottom = 0;
+}
+
+void WindowMask::putHyperlink(uint linkval, uint x0, uint y0, uint x1, uint y1) {
+	uint i, k;
+	size_t tx0 = x0 < x1 ? x0 : x1;
+	size_t tx1 = x0 < x1 ? x1 : x0;
+	size_t ty0 = y0 < y1 ? y0 : y1;
+	size_t ty1 = y0 < y1 ? y1 : y0;
+
+	if (!_hor || !_ver) {
+		warning("putHyperlink: struct not initialized");
+		return;
+	}
+
+	if (tx0 >= _hor
+			|| tx1 >= _hor
+			|| ty0 >= _ver || ty1 >= _ver
+			|| !_links[tx0] || !_links[tx1]) {
+		warning("putHyperlink: invalid range given");
+		return;
+	}
+
+	for (i = tx0; i < tx1; i++) {
+		for (k = ty0; k < ty1; k++)
+			_links[i][k] = linkval;
+	}
+}
+
+uint WindowMask::getHyperlink(const Point &pos) const {
+	if (!_hor || !_ver) {
+		warning("getHyperlink: struct not initialized");
+		return 0;
+	}
+
+	if (pos.x >= (int16)_hor || pos.y >= (int16)_ver || !_links[pos.x]) {
+		warning("getHyperlink: invalid range given");
+		return 0;
+	}
+
+	return _links[pos.x][pos.y];
+}
+
+/*--------------------------------------------------------------------------*/
+
+void Selection::startSelection(const Point &pos) {
+	int tx, ty;
+
+	if (!_hor || !_ver) {
+		warning("startSelection: mask not initialized");
+		return;
+	}
+
+	tx = MIN(pos.x, (int16)_hor);
+	ty = MIN(pos.y, (int16)_ver);
+
+	_select.left = _select.right = _last.x = tx;
+	_select.top = _select.bottom = _last.y = ty;
+
+	g_vm->_windows->selectionChanged();
+}
+
+void Selection::moveSelection(const Point &pos) {
+	int tx, ty;
+
+	if (ABS(pos.x - _last.x) < 5 && ABS(pos.y - _last.y) < 5)
+		return;
+
+	if (!_hor || !_ver) {
+		warning("moveSelection: mask not initialized");
+		return;
+	}
+
+	tx = MIN(pos.x, (int16)_hor);
+	ty = MIN(pos.y, (int16)_ver);
+
+	_select.right = _last.x = tx;
+	_select.bottom = _last.y = ty;
+
+	g_vm->_windows->selectionChanged();
+}
+
+void Selection::clearSelection() {
+	if (!_select.isEmpty())
+		Windows::_forceRedraw = true;
+
+	_select = Rect();
+	g_vm->_windows->clearClaimSelect();
+}
+
+bool Selection::checkSelection(const Rect &r) const {
+	Rect select(MIN(_select.left, _select.right), MIN(_select.top, _select.bottom),
+		MAX(_select.left, _select.right), MAX(_select.top, _select.bottom));
+	if (select.isEmpty())
+		return false;
+
+	return select.intersects(r);
+}
+
+bool Selection::getSelection(const Rect &r, int *rx0, int *rx1) const {
+	uint row, upper, lower, above, below;
+	bool row_selected, found_left, found_right;
+	int from_right, from_below, is_above, is_below;
+	uint cx0, cx1, cy0, cy1;
+	uint x0 = r.left, y0 = r.top, x1 = r.right, y1 = r.bottom;
+
+	row = (y0 + y1) / 2;
+	upper = row - (row - y0) / 2;
+	lower = row + (y1 - row) / 2;
+	above = upper - (g_conf->_propInfo._leading) / 2;
+	below = lower + (g_conf->_propInfo._leading) / 2;
+
+	cx0 = MIN(_select.left, _select.right);
+	cx1 = MAX(_select.left, _select.right);
+	cy0 = MIN(_select.top, _select.bottom);
+	cy1 = MAX(_select.top, _select.bottom);
+
+	row_selected = false;
+
+	if ((cy0 >= upper && cy0 <= lower)
+			|| (cy1 >= upper && cy1 <= lower))
+		row_selected = true;
+
+	if (row >= cy0 && row <= cy1)
+		row_selected = true;
+
+	if (!row_selected)
+		return false;
+
+	from_right = (_select.left != (int16)cx0);
+	from_below = (_select.top != (int16)cy0);
+	is_above = (above >= cy0 && above <= cy1);
+	is_below = (below >= cy0 && below <= cy1);
+
+	*rx0 = 0;
+	*rx1 = 0;
+
+	found_left = false;
+	found_right = false;
+
+	if (is_above && is_below) {
+		*rx0 = x0;
+		*rx1 = x1;
+		found_left = true;
+		found_right = true;
+	} else if (!is_above && is_below) {
+		if (from_below) {
+			if (from_right) {
+				*rx0 = cx0;
+				*rx1 = x1;
+				found_left = true;
+				found_right = true;
+			} else {
+				*rx0 = cx1;
+				*rx1 = x1;
+				found_left = true;
+				found_right = true;
+			}
+		} else {
+			if (from_right) {
+				*rx0 = cx1;
+				*rx1 = x1;
+				found_left = true;
+				found_right = true;
+			} else {
+				*rx1 = x1;
+				found_right = true;
+			}
+		}
+	} else if (is_above && !is_below) {
+		if (from_below) {
+			if (from_right) {
+				*rx0 = x0;
+				*rx1 = cx1;
+				found_left = true;
+				found_right = true;
+			} else {
+				*rx0 = x0;
+				*rx1 = cx0;
+				found_left = true;
+				found_right = true;
+			}
+		} else {
+			if (from_right) {
+				if (x0 > cx0)
+					return false;
+				*rx0 = x0;
+				*rx1 = cx0;
+				found_left = true;
+				found_right = true;
+			} else {
+				*rx0 = x0;
+				found_left = true;
+			}
+		}
+	}
+
+	if (found_left && found_right)
+		return true;
+
+	for (uint i = x0; i <= x1; i++) {
+		if (i >= cx0 && i <= cx1) {
+			if (!found_left) {
+				*rx0 = i;
+				found_left = true;
+				if (found_right)
+					return true;
+			} else {
+				if (!found_right)
+					*rx1 = i;
+			}
+		}
+	}
+
+	if (rx0 && !rx1)
+		*rx1 = x1;
+
+	return (rx0 && rx1);
+}
+
+} // End of namespace Glk