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messagequeue.go
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messagequeue.go
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/*
* messagequeue.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 (
"github.com/gopxl/pixel"
)
// MessageQueue struct for list with messages to display.
type MessageQueue struct {
queue []*MessageWindow
focus *Focus
}
// NewMessageQueue creates new messages queue.
func NewMessageQueue(focus *Focus) *MessageQueue {
mq := new(MessageQueue)
mq.queue = make([]*MessageWindow, 0)
mq.focus = focus
return mq
}
// Draw draws all messages
func (mq *MessageQueue) Draw(t pixel.Target, matrix pixel.Matrix) {
for _, m := range mq.queue {
if m.Opened() {
m.Draw(t, matrix)
}
}
}
// Update updates all messages in queue.
func (mq *MessageQueue) Update(win *Window) {
for i, m := range mq.queue {
if m.Opened() {
if i == len(mq.queue)-1 {
m.Active(true)
mq.focus.Focus(m)
} else {
m.Active(false)
}
m.Update(win)
}
if m.Dismissed() {
mq.Remove(i)
}
}
}
// Append adds specified message to the front of queue.
func (mq *MessageQueue) Append(m *MessageWindow) {
mq.queue = append(mq.queue, m)
}
// Remove removes message with specified index from queue.
func (mq *MessageQueue) Remove(i int) {
mq.queue = append(mq.queue[:i], mq.queue[i+1:]...)
}
// ContainsPosition checks whether specified position is
// contained by any message window in the queue.
func (mq *MessageQueue) ContainsPosition(pos pixel.Vec) bool {
for _, msg := range mq.queue {
if msg.DrawArea().Contains(pos) {
return true
}
}
return false
}