-
-
Notifications
You must be signed in to change notification settings - Fork 12
/
logo.go
318 lines (266 loc) · 8.05 KB
/
logo.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
package logo
import (
"context"
"fmt"
"image"
"image/draw"
"os"
"path/filepath"
"go.uber.org/zap"
"github.com/disintegration/imaging"
"github.com/robbydyer/sports/internal/rgbrender"
)
// SourceGetter is a func type that retrieves a source logo image.Image
type SourceGetter func(ctx context.Context) (image.Image, error)
// Logo is used to manage logo rendering
type Logo struct {
key string
sourceLogoGetter SourceGetter
bounds image.Rectangle
targetDirectory string
config *Config
thumbnail image.Image
log *zap.Logger
}
// Config ...
type Config struct {
Abbrev string `json:"abbrev"`
Pt *Pt `json:"pt"`
XSize int `json:"xSize"`
YSize int `json:"ySize"`
// FitImage determines if image scaling is based on bounds given
// to render functions. Default of false uses the matrix bounds for scaling
FitImage bool `json:"fit"`
}
// Pt defines the x, y shift and zoom values for a logo
type Pt struct {
X int `json:"xShift"`
Y int `json:"yShift"`
Zoom float64 `json:"zoom"`
}
// New ...
func New(key string, getter SourceGetter, targetDirectory string, matrixBounds image.Rectangle, conf *Config) *Logo {
return &Logo{
key: key,
targetDirectory: targetDirectory,
sourceLogoGetter: getter,
config: conf,
bounds: matrixBounds,
}
}
// Key returns the key name of the logo
func (l *Logo) Key() string {
return l.key
}
// SetLogger ...
func (l *Logo) SetLogger(logger *zap.Logger) {
l.log = logger
}
func (l *Logo) ensureLogger() {
if l.log == nil {
l.log, _ = zap.NewDevelopment()
}
}
// ThumbnailFilename returns the filname for the resized thumbnail to use
func (l *Logo) ThumbnailFilename(size image.Rectangle) string {
return filepath.Join(l.targetDirectory, fmt.Sprintf("%s.tiff", l.key))
}
// GetThumbnail returns the resized image
func (l *Logo) GetThumbnail(ctx context.Context, size image.Rectangle) (image.Image, error) {
if l.thumbnail != nil {
return l.thumbnail, nil
}
thumbFile := l.ThumbnailFilename(size)
if _, err := os.Stat(thumbFile); err != nil {
if os.IsNotExist(err) {
if _, err := os.Stat(l.targetDirectory); err != nil {
if os.IsNotExist(err) {
if err := os.MkdirAll(l.targetDirectory, 0o755); err != nil {
return nil, fmt.Errorf("failed to create logo cache dir: %w", err)
}
}
}
src, err := l.sourceLogoGetter(ctx)
if err != nil {
return nil, fmt.Errorf("failed to get logo source for %s: %w", l.config.Abbrev, err)
}
if src == nil {
return nil, fmt.Errorf("failed to get logo source for %s", l.config.Abbrev)
}
// Create the thumbnail
if l.config.FitImage {
if l.log != nil {
l.log.Debug("fit image thumbnail",
zap.Int("width", size.Dx()),
zap.Int("height", size.Dy()),
)
}
l.thumbnail = rgbrender.FitImage(src, size, l.config.Pt.Zoom)
} else {
l.thumbnail = rgbrender.ResizeImage(src, size, l.config.Pt.Zoom)
}
go func() {
l.ensureLogger()
l.log.Info("saving thumbnail logo", zap.String("filename", thumbFile))
if err := imaging.Save(l.thumbnail, thumbFile); err != nil {
l.log.Error("failed to save logo to file", zap.Error(err))
}
}()
return l.thumbnail, nil
}
return nil, err
}
var err error
l.thumbnail, err = imaging.Open(thumbFile)
if err != nil {
return nil, fmt.Errorf("failed to open logo %s: %w", thumbFile, err)
}
return l.thumbnail, nil
}
// RenderLeftAligned renders the logo on the left side of the matrix
func (l *Logo) RenderLeftAligned(ctx context.Context, bounds image.Rectangle, endX int) (image.Image, error) {
var thumb image.Image
var err error
if l.config.FitImage {
thumb, err = l.GetThumbnail(ctx, bounds)
if err != nil {
return nil, err
}
} else {
thumb, err = l.GetThumbnail(ctx, l.bounds)
if err != nil {
return nil, err
}
}
startX := 0
if thumb.Bounds().Dx() > endX {
startX = endX - thumb.Bounds().Dx()
}
startX += l.config.Pt.X
startY := 0 + l.config.Pt.Y
newBounds := image.Rect(startX, startY, bounds.Dx()-1, bounds.Dy()-1)
align, err := rgbrender.AlignPosition(rgbrender.LeftCenter, newBounds, thumb.Bounds().Dx(), thumb.Bounds().Dy())
if err != nil {
return nil, err
}
i := image.NewRGBA(newBounds)
draw.Draw(i, align, thumb, image.Point{}, draw.Over)
if l.log != nil {
l.log.Debug("logo left alignment",
zap.Int("end X", endX),
zap.Int("size X", bounds.Dx()),
zap.Int("size Y", bounds.Dy()),
zap.Int("newBounds min X", newBounds.Min.X),
zap.Int("newBounds min Y", newBounds.Min.Y),
zap.Int("newBounds max X", newBounds.Max.X),
zap.Int("newBounds max Y", newBounds.Max.Y),
zap.Int("align min X", align.Min.X),
zap.Int("align min Y", align.Min.Y),
zap.Int("align max X", align.Max.X),
zap.Int("align max Y", align.Max.Y),
zap.Int("img min X", i.Bounds().Min.X),
zap.Int("img min Y", i.Bounds().Min.Y),
zap.Int("img max X", i.Bounds().Max.X),
zap.Int("img max Y", i.Bounds().Max.Y),
)
}
return i, nil
}
// RenderRightAligned renders the logo on the right side of the matrix
func (l *Logo) RenderRightAligned(ctx context.Context, bounds image.Rectangle, startX int) (image.Image, error) {
var thumb image.Image
var err error
if l.config.FitImage {
thumb, err = l.GetThumbnail(ctx, bounds)
if err != nil {
return nil, err
}
} else {
thumb, err = l.GetThumbnail(ctx, l.bounds)
if err != nil {
return nil, err
}
}
startX = startX + l.config.Pt.X
startY := 0 + l.config.Pt.Y
newBounds := image.Rect(startX, startY, thumb.Bounds().Dx()+startX, thumb.Bounds().Dy()+startY)
align, err := rgbrender.AlignPosition(rgbrender.RightCenter, newBounds, thumb.Bounds().Dx(), thumb.Bounds().Dy())
if err != nil {
return nil, err
}
i := image.NewRGBA(newBounds)
draw.Draw(i, align, thumb, image.Point{}, draw.Over)
return i, nil
}
// RenderRightAlignedWithEnd renders the logo on the right side of the matrix
func (l *Logo) RenderRightAlignedWithEnd(ctx context.Context, bounds image.Rectangle, endX int) (image.Image, error) {
var thumb image.Image
var err error
if l.config.FitImage {
thumb, err = l.GetThumbnail(ctx, bounds)
if err != nil {
return nil, err
}
} else {
thumb, err = l.GetThumbnail(ctx, l.bounds)
if err != nil {
return nil, err
}
}
startX := 0
if thumb.Bounds().Dx() > endX {
startX = endX - thumb.Bounds().Dx()
}
startX += l.config.Pt.X
startY := 0 + l.config.Pt.Y
newBounds := image.Rect(startX, startY, endX, bounds.Dy()-1)
l.ensureLogger()
l.log.Debug("render aligned logo",
zap.String("func", "RenderRightAlignedWithEnd"),
zap.Int("start X", newBounds.Min.X),
zap.Int("start Y", newBounds.Min.Y),
zap.Int("end X", newBounds.Max.X),
zap.Int("end Y", newBounds.Max.Y),
)
align, err := rgbrender.AlignPosition(rgbrender.RightCenter, newBounds, thumb.Bounds().Dx(), thumb.Bounds().Dy())
if err != nil {
return nil, err
}
i := image.NewRGBA(newBounds)
draw.Draw(i, align, thumb, image.Point{}, draw.Over)
return i, nil
}
// RenderLeftAlignedWithStart renders the logo on the left side of the matrix with a starting X point
func (l *Logo) RenderLeftAlignedWithStart(ctx context.Context, bounds image.Rectangle, startX int) (image.Image, error) {
var thumb image.Image
var err error
if l.config.FitImage {
thumb, err = l.GetThumbnail(ctx, bounds)
if err != nil {
return nil, err
}
} else {
thumb, err = l.GetThumbnail(ctx, l.bounds)
if err != nil {
return nil, err
}
}
startX = startX + l.config.Pt.X
startY := 0 + l.config.Pt.Y
newBounds := image.Rect(startX, startY, bounds.Dx()+startX, bounds.Dy()+startY)
l.ensureLogger()
l.log.Debug("render aligned logo",
zap.String("func", "RenderLeftAlignedWithStart"),
zap.Int("start X", newBounds.Min.X),
zap.Int("start Y", newBounds.Min.Y),
zap.Int("end X", newBounds.Max.X),
zap.Int("end Y", newBounds.Max.Y),
)
align, err := rgbrender.AlignPosition(rgbrender.LeftCenter, newBounds, thumb.Bounds().Dx(), thumb.Bounds().Dy())
if err != nil {
return nil, err
}
i := image.NewRGBA(newBounds)
draw.Draw(i, align, thumb, image.Point{}, draw.Over)
return i, nil
}