scummvm/engines/glk/selection.cpp
2021-12-26 18:48:43 +01:00

317 lines
6.8 KiB
C++

/* 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