furnace/src/gui/cursor.cpp

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/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2022 tildearrow and contributors
*
* 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 "gui.h"
#include "actionUtil.h"
void FurnaceGUI::startSelection(int xCoarse, int xFine, int y) {
if (xCoarse!=selStart.xCoarse || xFine!=selStart.xFine || y!=selStart.y) {
curNibble=false;
}
cursor.xCoarse=xCoarse;
cursor.xFine=xFine;
cursor.y=y;
selStart.xCoarse=xCoarse;
selStart.xFine=xFine;
selStart.y=y;
selEnd.xCoarse=xCoarse;
selEnd.xFine=xFine;
selEnd.y=y;
selecting=true;
e->setMidiBaseChan(cursor.xCoarse);
}
void FurnaceGUI::updateSelection(int xCoarse, int xFine, int y) {
if (!selecting) return;
selEnd.xCoarse=xCoarse;
selEnd.xFine=xFine;
selEnd.y=y;
}
void FurnaceGUI::finishSelection() {
// swap points if needed
if (selEnd.y<selStart.y) {
selEnd.y^=selStart.y;
selStart.y^=selEnd.y;
selEnd.y^=selStart.y;
}
if (selEnd.xCoarse<selStart.xCoarse) {
selEnd.xCoarse^=selStart.xCoarse;
selStart.xCoarse^=selEnd.xCoarse;
selEnd.xCoarse^=selStart.xCoarse;
selEnd.xFine^=selStart.xFine;
selStart.xFine^=selEnd.xFine;
selEnd.xFine^=selStart.xFine;
} else if (selEnd.xCoarse==selStart.xCoarse && selEnd.xFine<selStart.xFine) {
selEnd.xFine^=selStart.xFine;
selStart.xFine^=selEnd.xFine;
selEnd.xFine^=selStart.xFine;
}
selecting=false;
// boundary check
int chanCount=e->getTotalChannelCount();
if (selStart.xCoarse<0) selStart.xCoarse=0;
if (selStart.xCoarse>=chanCount) selStart.xCoarse=chanCount-1;
if (selStart.y<0) selStart.y=0;
if (selStart.y>=e->song.patLen) selStart.y=e->song.patLen-1;
if (selEnd.xCoarse<0) selEnd.xCoarse=0;
if (selEnd.xCoarse>=chanCount) selEnd.xCoarse=chanCount-1;
if (selEnd.y<0) selEnd.y=0;
if (selEnd.y>=e->song.patLen) selEnd.y=e->song.patLen-1;
if (cursor.xCoarse<0) cursor.xCoarse=0;
if (cursor.xCoarse>=chanCount) cursor.xCoarse=chanCount-1;
if (cursor.y<0) cursor.y=0;
if (cursor.y>=e->song.patLen) cursor.y=e->song.patLen-1;
if (e->song.chanCollapse[selEnd.xCoarse]) {
selStart.xFine=0;
}
if (e->song.chanCollapse[selEnd.xCoarse]) {
selEnd.xFine=2+e->song.pat[cursor.xCoarse].effectCols*2;
}
e->setMidiBaseChan(cursor.xCoarse);
}
void FurnaceGUI::moveCursor(int x, int y, bool select) {
if (!select) {
finishSelection();
}
DETERMINE_FIRST_LAST;
curNibble=false;
if (x!=0) {
demandScrollX=true;
if (x>0) {
for (int i=0; i<x; i++) {
if (++cursor.xFine>=(e->song.chanCollapse[cursor.xCoarse]?1:(3+e->song.pat[cursor.xCoarse].effectCols*2))) {
cursor.xFine=0;
if (++cursor.xCoarse>=lastChannel) {
if (settings.wrapHorizontal!=0 && !select) {
cursor.xCoarse=firstChannel;
if (settings.wrapHorizontal==2) y++;
} else {
cursor.xCoarse=lastChannel-1;
cursor.xFine=e->song.chanCollapse[cursor.xCoarse]?0:(2+e->song.pat[cursor.xCoarse].effectCols*2);
}
} else {
while (!e->song.chanShow[cursor.xCoarse]) {
cursor.xCoarse++;
if (cursor.xCoarse>=e->getTotalChannelCount()) break;
}
}
}
}
} else {
for (int i=0; i<-x; i++) {
if (--cursor.xFine<0) {
if (--cursor.xCoarse<firstChannel) {
if (settings.wrapHorizontal!=0 && !select) {
cursor.xCoarse=lastChannel-1;
cursor.xFine=2+e->song.pat[cursor.xCoarse].effectCols*2;
if (settings.wrapHorizontal==2) y--;
} else {
cursor.xCoarse=firstChannel;
cursor.xFine=0;
}
} else {
while (!e->song.chanShow[cursor.xCoarse]) {
cursor.xCoarse--;
if (cursor.xCoarse<0) break;
}
if (e->song.chanCollapse[cursor.xCoarse]) {
cursor.xFine=0;
} else {
cursor.xFine=2+e->song.pat[cursor.xCoarse].effectCols*2;
}
}
}
}
}
}
if (y!=0) {
if (y>0) {
for (int i=0; i<y; i++) {
cursor.y++;
if (cursor.y>=e->song.patLen) {
if (settings.wrapVertical!=0 && !select) {
cursor.y=0;
if (settings.wrapVertical==2) {
if ((!e->isPlaying() || !followPattern) && curOrder<(e->song.ordersLen-1)) {
setOrder(curOrder+1);
} else {
cursor.y=e->song.patLen-1;
}
}
} else {
cursor.y=e->song.patLen-1;
}
}
}
} else {
for (int i=0; i<-y; i++) {
cursor.y--;
if (cursor.y<0) {
if (settings.wrapVertical!=0 && !select) {
cursor.y=e->song.patLen-1;
if (settings.wrapVertical==2) {
if ((!e->isPlaying() || !followPattern) && curOrder>0) {
setOrder(curOrder-1);
} else {
cursor.y=0;
}
}
} else {
cursor.y=0;
}
}
}
}
}
if (!select) {
selStart=cursor;
}
selEnd=cursor;
if (!settings.cursorMoveNoScroll) {
updateScroll(cursor.y);
}
e->setMidiBaseChan(cursor.xCoarse);
}
void FurnaceGUI::moveCursorPrevChannel(bool overflow) {
finishSelection();
curNibble=false;
DETERMINE_FIRST_LAST;
do {
cursor.xCoarse--;
if (cursor.xCoarse<0) break;
} while (!e->song.chanShow[cursor.xCoarse]);
if (cursor.xCoarse<firstChannel) {
if (overflow) {
cursor.xCoarse=lastChannel-1;
} else {
cursor.xCoarse=firstChannel;
}
}
e->setMidiBaseChan(cursor.xCoarse);
selStart=cursor;
selEnd=cursor;
demandScrollX=true;
}
void FurnaceGUI::moveCursorNextChannel(bool overflow) {
finishSelection();
curNibble=false;
DETERMINE_FIRST_LAST;
do {
cursor.xCoarse++;
if (cursor.xCoarse>=e->getTotalChannelCount()) break;
} while (!e->song.chanShow[cursor.xCoarse]);
if (cursor.xCoarse>=lastChannel) {
if (overflow) {
cursor.xCoarse=firstChannel;
} else {
cursor.xCoarse=lastChannel-1;
}
}
e->setMidiBaseChan(cursor.xCoarse);
selStart=cursor;
selEnd=cursor;
demandScrollX=true;
}
void FurnaceGUI::moveCursorTop(bool select) {
finishSelection();
curNibble=false;
if (cursor.y==0) {
DETERMINE_FIRST;
cursor.xCoarse=firstChannel;
cursor.xFine=0;
demandScrollX=true;
} else {
cursor.y=0;
}
selStart=cursor;
if (!select) {
selEnd=cursor;
}
e->setMidiBaseChan(cursor.xCoarse);
updateScroll(cursor.y);
}
void FurnaceGUI::moveCursorBottom(bool select) {
finishSelection();
curNibble=false;
if (cursor.y==e->song.patLen-1) {
DETERMINE_LAST;
cursor.xCoarse=lastChannel-1;
if (cursor.xCoarse<0) cursor.xCoarse=0;
cursor.xFine=2+e->song.pat[cursor.xCoarse].effectCols*2;
demandScrollX=true;
} else {
cursor.y=e->song.patLen-1;
}
if (!select) {
selStart=cursor;
}
selEnd=cursor;
e->setMidiBaseChan(cursor.xCoarse);
updateScroll(cursor.y);
}
void FurnaceGUI::editAdvance() {
finishSelection();
cursor.y+=editStep;
if (cursor.y>=e->song.patLen) cursor.y=e->song.patLen-1;
selStart=cursor;
selEnd=cursor;
updateScroll(cursor.y);
}