124 lines
3.3 KiB
Go
124 lines
3.3 KiB
Go
// gomuks - A terminal Matrix client written in Go.
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// Copyright (C) 2018 Tulir Asokan
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package messages
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import (
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"bytes"
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"encoding/gob"
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"fmt"
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"time"
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"image/color"
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"maunium.net/go/gomuks/debug"
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"maunium.net/go/gomuks/interface"
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"maunium.net/go/gomuks/lib/ansimage"
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"maunium.net/go/gomuks/ui/messages/tstring"
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"maunium.net/go/tcell"
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)
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func init() {
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gob.Register(&ImageMessage{})
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}
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type ImageMessage struct {
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BaseMessage
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Homeserver string
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FileID string
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data []byte
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gmx ifc.Gomuks
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}
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// NewImageMessage creates a new ImageMessage object with the provided values and the default state.
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func NewImageMessage(gmx ifc.Gomuks, id, sender, displayname, msgtype, homeserver, fileID string, data []byte, timestamp time.Time) UIMessage {
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return &ImageMessage{
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newBaseMessage(id, sender, displayname, msgtype, timestamp),
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homeserver,
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fileID,
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data,
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gmx,
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}
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}
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func (msg *ImageMessage) RegisterGomuks(gmx ifc.Gomuks) {
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msg.gmx = gmx
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debug.Print(len(msg.data), msg.data)
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if len(msg.data) == 0 {
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go func() {
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defer gmx.Recover()
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msg.updateData()
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}()
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}
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}
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func (msg *ImageMessage) NotificationContent() string {
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return "Sent an image"
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}
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func (msg *ImageMessage) updateData() {
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debug.Print("Loading image:", msg.Homeserver, msg.FileID)
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data, _, _, err := msg.gmx.Matrix().Download(fmt.Sprintf("mxc://%s/%s", msg.Homeserver, msg.FileID))
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if err != nil {
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debug.Print("Failed to download image %s/%s: %v", msg.Homeserver, msg.FileID, err)
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return
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}
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msg.data = data
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}
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func (msg *ImageMessage) Path() string {
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return msg.gmx.Matrix().GetCachePath(msg.Homeserver, msg.FileID)
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}
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// CopyFrom replaces the content of this message object with the content of the given object.
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func (msg *ImageMessage) CopyFrom(from ifc.MessageMeta) {
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msg.BaseMessage.CopyFrom(from)
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fromImgMsg, ok := from.(*ImageMessage)
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if ok {
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msg.data = fromImgMsg.data
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}
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msg.RecalculateBuffer()
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}
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// CalculateBuffer generates the internal buffer for this message that consists
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// of the text of this message split into lines at most as wide as the width
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// parameter.
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func (msg *ImageMessage) CalculateBuffer(width int) {
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if width < 2 {
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return
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}
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image, err := ansimage.NewScaledFromReader(bytes.NewReader(msg.data), 0, width, color.Black)
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if err != nil {
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msg.buffer = []tstring.TString{tstring.NewColorTString("Failed to display image", tcell.ColorRed)}
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debug.Print("Failed to display image:", err)
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return
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}
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msg.buffer = image.Render()
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msg.prevBufferWidth = width
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}
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// RecalculateBuffer calculates the buffer again with the previously provided width.
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func (msg *ImageMessage) RecalculateBuffer() {
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msg.CalculateBuffer(msg.prevBufferWidth)
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}
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