/
infowindow.go
81 lines (72 loc) · 2.11 KB
/
infowindow.go
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/*
* infowindow.go
*
* Copyright 2018-2024 Dariusz Sikora <ds@isangeles.dev>
*
* 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.
*
*
*/
package mtk
import (
"image/color"
"golang.org/x/image/colornames"
"github.com/gopxl/pixel"
"github.com/gopxl/pixel/imdraw"
)
// InfoWindow struct for small text boxes that
// follows mouse cursor.
type InfoWindow struct {
*Text
draw *imdraw.IMDraw
bgColor color.Color
drawArea pixel.Rect
}
// NewInfoWindow creates new information window.
func NewInfoWindow(params Params) *InfoWindow {
iw := new(InfoWindow)
textParams := Params{
FontSize: params.FontSize,
}
iw.Text = NewText(textParams)
iw.draw = imdraw.New(nil)
iw.bgColor = colornames.Black
if params.MainColor != nil {
iw.bgColor = params.MainColor
}
return iw
}
// Draw draws info window.
func (iw *InfoWindow) Draw(t pixel.Target) {
iw.drawBackground(t)
textPos := pixel.V(iw.drawArea.Center().X, iw.drawArea.Center().Y-iw.Size().Y/2)
iw.Text.Draw(t, Matrix().Moved(textPos))
}
// Update updates info window.
func (iw *InfoWindow) Update(win *Window) {
iw.drawArea = pixel.R(win.MousePosition().X, win.MousePosition().Y,
win.MousePosition().X+iw.Size().X,
win.MousePosition().Y+iw.Size().Y*1.5)
}
// drawBackground draws info background.
func (iw *InfoWindow) drawBackground(t pixel.Target) {
iw.draw.Clear()
iw.draw.Color = iw.bgColor
iw.draw.Push(iw.drawArea.Min)
iw.draw.Push(iw.drawArea.Max)
iw.draw.Rectangle(0)
iw.draw.Draw(t)
}