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main.go
f6f2a52dee
Original commit message of the gocui change:
This fixes View.Size, Width and Height to be the correct (outer) size of a view
including its frame, and InnerSize/InnerWidth/InnerHeight to be the usable
client area exluding the frame. Previously, Size was actually the InnerSize (and
a lot of client code used it as such, so these need to be changed to InnerSize).
InnerSize, on the other hand, was *one* less than Size (not two, as you would
have expected), and in many cases this was made up for at call sites by adding 1
(e.g. in calcRealScrollbarStartEnd, parseInput, and many other places in the
lazygit code).
There are still some weird things left that I didn't address here:
- a view's lower-right coordinates (x1/y1) are one less than you would expect.
For example, a view with a 2x2 client area like this:
╭──╮
│ab│
│cd│
╰──╯
in the top-left corner of the screen (x0 and y0 both zero) has x1/xy at 3, not
4 as would be more natural.
- a view without a frame has its coordinates extended by 1 on all sides; to
illustrate, the same 2x2 view as before but without a frame, sitting in the
top-left corder of the screen, has coordinates x0=-1, y0=-1, x1=2, y1=2. This
is highly confusing and unexpected.
I left these as they are because they would be even more of a breaking change,
and also because they don't have quite as much of an impact on general app code.
105 lines
2.3 KiB
Go
105 lines
2.3 KiB
Go
package context
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import (
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"github.com/jesseduffield/gocui"
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"github.com/jesseduffield/lazygit/pkg/gui/types"
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)
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const HORIZONTAL_SCROLL_FACTOR = 3
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type ViewTrait struct {
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view *gocui.View
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}
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var _ types.IViewTrait = &ViewTrait{}
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func NewViewTrait(view *gocui.View) *ViewTrait {
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return &ViewTrait{view: view}
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}
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func (self *ViewTrait) FocusPoint(yIdx int) {
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self.view.FocusPoint(self.view.OriginX(), yIdx)
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}
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func (self *ViewTrait) SetRangeSelectStart(yIdx int) {
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self.view.SetRangeSelectStart(yIdx)
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}
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func (self *ViewTrait) CancelRangeSelect() {
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self.view.CancelRangeSelect()
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}
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func (self *ViewTrait) SetViewPortContent(content string) {
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_, y := self.view.Origin()
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self.view.OverwriteLines(y, content)
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}
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func (self *ViewTrait) SetViewPortContentAndClearEverythingElse(content string) {
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_, y := self.view.Origin()
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self.view.OverwriteLinesAndClearEverythingElse(y, content)
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}
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func (self *ViewTrait) SetContentLineCount(lineCount int) {
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self.view.SetContentLineCount(lineCount)
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}
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func (self *ViewTrait) SetContent(content string) {
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self.view.SetContent(content)
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}
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func (self *ViewTrait) SetHighlight(highlight bool) {
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self.view.Highlight = highlight
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self.view.HighlightInactive = false
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}
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func (self *ViewTrait) SetFooter(value string) {
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self.view.Footer = value
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}
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func (self *ViewTrait) SetOriginX(value int) {
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self.view.SetOriginX(value)
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}
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// tells us the start of line indexes shown in the view currently as well as the capacity of lines shown in the viewport.
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func (self *ViewTrait) ViewPortYBounds() (int, int) {
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_, start := self.view.Origin()
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length := self.view.InnerHeight()
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return start, length
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}
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func (self *ViewTrait) ScrollLeft() {
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self.view.ScrollLeft(self.horizontalScrollAmount())
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}
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func (self *ViewTrait) ScrollRight() {
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self.view.ScrollRight(self.horizontalScrollAmount())
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}
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func (self *ViewTrait) horizontalScrollAmount() int {
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return self.view.InnerWidth() / HORIZONTAL_SCROLL_FACTOR
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}
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func (self *ViewTrait) ScrollUp(value int) {
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self.view.ScrollUp(value)
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}
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func (self *ViewTrait) ScrollDown(value int) {
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self.view.ScrollDown(value)
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}
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// this returns the amount we'll scroll if we want to scroll by a page.
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func (self *ViewTrait) PageDelta() int {
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height := self.view.InnerHeight()
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delta := height - 1
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if delta == 0 {
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return 1
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}
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return delta
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}
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func (self *ViewTrait) SelectedLineIdx() int {
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return self.view.SelectedLineIdx()
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}
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