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wordwrap panning for k

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This commit is contained in:
斟酌 鵬兄 2016-03-14 23:57:17 +08:00
parent 97480cd0c6
commit cbec2c7475
2 changed files with 22 additions and 9 deletions
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14
botanjs/src/Components/Vim/Cursor.js
View File

@ -135,13 +135,19 @@
Cursor.prototype.moveY = function( d ) Cursor.prototype.moveY = function( d )
{ {
var Y = this.Y; var Y = this.Y + d;
var line; var line;
Y += d;
if( Y < 0 ) if( Y < 0 )
{ {
Y = 0; this.feeder.pan( undefined, d );
this.Y = 0;
this.moveX();
this.updatePosition();
this.feeder.softReset();
return;
} }
else if( this.feeder.moreAt < Y ) else if( this.feeder.moreAt < Y )
{ {
@ -186,7 +192,7 @@
return; return;
} }
else if ( this.Y < Y ) else if ( 0 < d )
{ {
// If panning is forward // If panning is forward
// and next line does not exists // and next line does not exists

15
botanjs/src/Components/Vim/LineFeeder.js
View File

@ -130,6 +130,7 @@
return this.__render( buffs[ start ], this.__rLength ); return this.__render( buffs[ start ], this.__rLength );
}; };
// Performs a line panning
Feeder.prototype.pan = function( dX, dY ) Feeder.prototype.pan = function( dX, dY )
{ {
if( dX == undefined ) dX = 0; if( dX == undefined ) dX = 0;
@ -140,14 +141,20 @@
var X = this.panX + dX; var X = this.panX + dX;
var Y = this.panY + dY; var Y = this.panY + dY;
var f = this.content.indexOf( "\n" ); var f = -1;
var i = 1; var i = 0;
while( f != - 1 && i < Y ) // Y cannot be negative
if( Y < 0 ) Y = 0;
if( 0 < Y )
{
f = this.content.indexOf( "\n" );
for( i = 1; f != - 1 && i < Y; i ++ )
{ {
i ++;
f = this.content.indexOf( "\n", f + 1 ); f = this.content.indexOf( "\n", f + 1 );
} }
}
this.firstBuffer.Push( this.firstBuffer.Push(
this.content.substr( f + 1 ) this.content.substr( f + 1 )