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furnace/src/gui/cursor.cpp

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/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2023 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 "../ta-log.h"
#include "actionUtil.h"
void FurnaceGUI::startSelection(int xCoarse, int xFine, int y, bool fullRow) {
DETERMINE_FIRST_LAST;
if (xCoarse!=selStart.xCoarse || xFine!=selStart.xFine || y!=selStart.y) {
curNibble=false;
}
if (ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left) && !fullRow && settings.doubleClickColumn) {
if (cursor.xCoarse==xCoarse && cursor.xFine==xFine && cursor.y==y) {
// select entire channel
selStart.xCoarse=xCoarse;
selStart.xFine=0;
selStart.y=0;
selEnd.xCoarse=xCoarse;
selEnd.xFine=2+e->curPat[selEnd.xCoarse].effectCols*2;
selEnd.y=e->curSubSong->patLen-1;
finishSelection();
return;
}
}
if ((settings.dragMovesSelection==1 || (settings.dragMovesSelection==2 && (ImGui::IsKeyDown(ImGuiKey_LeftCtrl) || ImGui::IsKeyDown(ImGuiKey_RightCtrl)))) && !fullRow) {
if (xCoarse>=selStart.xCoarse && (xFine>=selStart.xFine || xCoarse>selStart.xCoarse) && y>=selStart.y &&
xCoarse<=selEnd.xCoarse && (xFine<=selEnd.xFine || xCoarse<selEnd.xCoarse) && y<=selEnd.y) {
dragging=true;
selecting=true;
selectingFull=false;
dragSourceX=xCoarse;
dragSourceXFine=xFine;
dragSourceY=y;
dragDestinationX=xCoarse;
dragDestinationXFine=xFine;
dragDestinationY=y;
dragStart=selStart;
dragEnd=selEnd;
return;
}
}
if (fullRow) {
selStart.xCoarse=firstChannel;
selStart.xFine=0;
selEnd.xCoarse=lastChannel-1;
selEnd.xFine=2+e->curPat[selEnd.xCoarse].effectCols*2;
selStart.y=y;
selEnd.y=y;
} else {
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;
selectingFull=fullRow;
e->setMidiBaseChan(cursor.xCoarse);
}
void FurnaceGUI::updateSelection(int xCoarse, int xFine, int y, bool fullRow) {
if (!selecting) return;
if (dragging) {
dragDestinationX=xCoarse;
if (dragStart.xFine>=3 && dragStart.xCoarse==dragEnd.xCoarse) dragDestinationXFine=(dragSourceXFine&1)?((xFine-1)|1):((xFine+1)&(~1));
dragDestinationY=y;
cursorDrag.xCoarse=xCoarse;
cursorDrag.xFine=xFine;
cursorDrag.y=y;
int len=dragEnd.xCoarse-dragStart.xCoarse+1;
if (len<0) len=0;
DETERMINE_FIRST_LAST;
if (dragStart.xCoarse+(dragDestinationX-dragSourceX)<firstChannel) {
dragDestinationX=dragSourceX-dragStart.xCoarse;
}
if (dragEnd.xCoarse+(dragDestinationX-dragSourceX)>=lastChannel) {
dragDestinationX=lastChannel-(dragEnd.xCoarse-dragSourceX)-1;
}
if (dragStart.xFine>=3 && dragStart.xCoarse==dragEnd.xCoarse) {
if (dragEnd.xFine+(dragDestinationXFine-dragSourceXFine)>(2+e->curPat[dragDestinationX].effectCols*2)) {
dragDestinationXFine=(2+e->curPat[dragDestinationX].effectCols*2)-dragEnd.xFine+dragSourceXFine;
}
if (dragStart.xFine+(dragDestinationXFine-dragSourceXFine)<3) {
dragDestinationXFine=3-dragStart.xFine+dragSourceXFine;
}
}
if (dragStart.y+(dragDestinationY-dragSourceY)<0) {
dragDestinationY=dragSourceY-dragStart.y;
}
if (dragEnd.y+(dragDestinationY-dragSourceY)>=e->curSubSong->patLen) {
dragDestinationY=e->curSubSong->patLen-(dragEnd.y-dragSourceY)-1;
}
selStart.xCoarse=dragStart.xCoarse+(dragDestinationX-dragSourceX);
selStart.xFine=dragStart.xFine+(dragDestinationXFine-dragSourceXFine);
selStart.y=dragStart.y+(dragDestinationY-dragSourceY);
selEnd.xCoarse=dragEnd.xCoarse+(dragDestinationX-dragSourceX);
selEnd.xFine=dragEnd.xFine+(dragDestinationXFine-dragSourceXFine);
selEnd.y=dragEnd.y+(dragDestinationY-dragSourceY);
} else {
if (selectingFull) {
DETERMINE_LAST;
selEnd.xCoarse=lastChannel-1;
selEnd.xFine=2+e->curPat[selEnd.xCoarse].effectCols*2;
selEnd.y=y;
} else {
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;
selectingFull=false;
if (dragging) {
if (dragSourceX==dragDestinationX && dragSourceY==dragDestinationY && dragSourceXFine==dragDestinationXFine) {
cursor=cursorDrag;
selStart=cursorDrag;
selEnd=cursorDrag;
} else { // perform drag
doDrag();
}
dragging=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->curSubSong->patLen) selStart.y=e->curSubSong->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->curSubSong->patLen) selEnd.y=e->curSubSong->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->curSubSong->patLen) cursor.y=e->curSubSong->patLen-1;
if (e->curSubSong->chanCollapse[selStart.xCoarse]==3) {
selStart.xFine=0;
}
if (e->curSubSong->chanCollapse[selEnd.xCoarse] && selEnd.xFine>=(3-e->curSubSong->chanCollapse[selEnd.xCoarse])) {
selEnd.xFine=2+e->curPat[selEnd.xCoarse].effectCols*2;
}
logV("finish selection: %d.%d,%d - %d.%d,%d",selStart.xCoarse,selStart.xFine,selStart.y,selEnd.xCoarse,selEnd.xFine,selEnd.y);
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->curSubSong->chanCollapse[cursor.xCoarse]?(4-e->curSubSong->chanCollapse[cursor.xCoarse]):(3+e->curPat[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->curSubSong->chanCollapse[cursor.xCoarse]?(3-e->curSubSong->chanCollapse[cursor.xCoarse]):(2+e->curPat[cursor.xCoarse].effectCols*2);
}
} else {
while (!e->curSubSong->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->curPat[cursor.xCoarse].effectCols*2;
if (settings.wrapHorizontal==2) y--;
} else {
cursor.xCoarse=firstChannel;
cursor.xFine=0;
}
} else {
while (!e->curSubSong->chanShow[cursor.xCoarse]) {
cursor.xCoarse--;
if (cursor.xCoarse<0) break;
}
if (e->curSubSong->chanCollapse[cursor.xCoarse]) {
cursor.xFine=3-e->curSubSong->chanCollapse[cursor.xCoarse];
} else {
cursor.xFine=2+e->curPat[cursor.xCoarse].effectCols*2;
}
}
}
}
}
}
if (y!=0) {
if (y>0) {
for (int i=0; i<y; i++) {
cursor.y++;
if (cursor.y>=e->curSubSong->patLen) {
if (settings.wrapVertical!=0 && !select) {
cursor.y=0;
if (settings.wrapVertical==2) {
if ((!e->isPlaying() || !followPattern) && curOrder<(e->curSubSong->ordersLen-1)) {
setOrder(curOrder+1);
} else {
cursor.y=e->curSubSong->patLen-1;
}
}
} else {
cursor.y=e->curSubSong->patLen-1;
}
}
}
} else {
for (int i=0; i<-y; i++) {
cursor.y--;
if (cursor.y<0) {
if (settings.wrapVertical!=0 && !select) {
cursor.y=e->curSubSong->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->curSubSong->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->curSubSong->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->curSubSong->patLen-1) {
DETERMINE_LAST;
cursor.xCoarse=lastChannel-1;
if (cursor.xCoarse<0) cursor.xCoarse=0;
cursor.xFine=2+e->curPat[cursor.xCoarse].effectCols*2;
demandScrollX=true;
} else {
cursor.y=e->curSubSong->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->curSubSong->patLen) cursor.y=e->curSubSong->patLen-1;
selStart=cursor;
selEnd=cursor;
updateScroll(cursor.y);
}
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