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chrome-logo.scm
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2009-12-15
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5KB
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133 lines
; CHROME-LOGOS
(define (apply-chrome-logo-effect img
logo-layer
offsets
bg-color)
(let* (
(offx1 (* offsets 0.4))
(offy1 (* offsets 0.3))
(offx2 (* offsets (- 0.4)))
(offy2 (* offsets (- 0.3)))
(feather (* offsets 0.5))
(width (car (gimp-drawable-width logo-layer)))
(height (car (gimp-drawable-height logo-layer)))
(layer1 (car (gimp-layer-new img width height RGBA-IMAGE "Layer 1" 100 DIFFERENCE-MODE)))
(layer2 (car (gimp-layer-new img width height RGBA-IMAGE "Layer 2" 100 DIFFERENCE-MODE)))
(layer3 (car (gimp-layer-new img width height RGBA-IMAGE "Layer 3" 100 NORMAL-MODE)))
(shadow (car (gimp-layer-new img width height RGBA-IMAGE "Drop Shadow" 100 NORMAL-MODE)))
(background (car (gimp-layer-new img width height RGB-IMAGE "Background" 100 NORMAL-MODE)))
(layer-mask (car (gimp-layer-create-mask layer1 ADD-BLACK-MASK)))
)
(gimp-context-push)
(script-fu-util-image-resize-from-layer img logo-layer)
(script-fu-util-image-add-layers img layer1 layer2 layer3 shadow background)
(gimp-context-set-background '(255 255 255))
(gimp-selection-none img)
(gimp-edit-fill layer1 BACKGROUND-FILL)
(gimp-edit-fill layer2 BACKGROUND-FILL)
(gimp-edit-fill layer3 BACKGROUND-FILL)
(gimp-edit-clear shadow)
(gimp-selection-layer-alpha logo-layer)
(gimp-drawable-set-visible logo-layer FALSE)
(gimp-drawable-set-visible shadow FALSE)
(gimp-drawable-set-visible background FALSE)
(gimp-context-set-background '(0 0 0))
(gimp-edit-fill layer1 BACKGROUND-FILL)
(gimp-selection-translate img offx1 offy1)
(gimp-selection-feather img feather)
(gimp-edit-fill layer2 BACKGROUND-FILL)
(gimp-selection-translate img (* 2 offx2) (* 2 offy2))
(gimp-edit-fill layer3 BACKGROUND-FILL)
(gimp-selection-none img)
(set! layer1 (car (gimp-image-merge-visible-layers img CLIP-TO-IMAGE)))
; if the original image contained more than one visible layer:
(while (> (car (gimp-image-get-layer-position img layer1))
(car (gimp-image-get-layer-position img shadow)))
(gimp-image-raise-layer img layer1)
)
(gimp-invert layer1)
(gimp-layer-add-mask layer1 layer-mask)
(gimp-selection-layer-alpha logo-layer)
(gimp-context-set-background '(255 255 255))
(gimp-selection-feather img feather)
(gimp-edit-fill layer-mask BACKGROUND-FILL)
(gimp-context-set-background '(0 0 0))
(gimp-selection-translate img offx1 offy1)
(gimp-edit-fill shadow BACKGROUND-FILL)
(gimp-selection-none img)
(gimp-context-set-background bg-color)
(gimp-edit-fill background BACKGROUND-FILL)
(gimp-drawable-set-visible shadow TRUE)
(gimp-drawable-set-visible background TRUE)
(gimp-drawable-set-name layer1 (car (gimp-drawable-get-name logo-layer)))
(gimp-image-remove-layer img logo-layer)
(gimp-context-pop)
)
)
(define (script-fu-chrome-logo-alpha img
logo-layer
offsets
bg-color)
(begin
(gimp-image-undo-group-start img)
(apply-chrome-logo-effect img logo-layer offsets bg-color)
(gimp-image-undo-group-end img)
(gimp-displays-flush)
)
)
(script-fu-register "script-fu-chrome-logo-alpha"
_"C_hrome..."
_"Add a simple chrome effect to the selected region (or alpha)"
"Spencer Kimball"
"Spencer Kimball & Peter Mattis"
"1997"
"RGBA"
SF-IMAGE "Image" 0
SF-DRAWABLE "Drawable" 0
SF-ADJUSTMENT _"Offsets (pixels * 2)" '(10 2 100 1 10 0 1)
SF-COLOR _"Background Color" "lightgrey"
)
(script-fu-menu-register "script-fu-chrome-logo-alpha"
"<Image>/Filters/Alpha to Logo")
(define (script-fu-chrome-logo text
size
font
bg-color)
(let* (
(img (car (gimp-image-new 256 256 RGB)))
(b-size (* size 0.2))
(text-layer (car (gimp-text-fontname img -1 0 0 text b-size TRUE size PIXELS font)))
)
(gimp-image-undo-disable img)
(apply-chrome-logo-effect img text-layer (* size 0.1) bg-color)
(gimp-image-undo-enable img)
(gimp-display-new img)
)
)
(script-fu-register "script-fu-chrome-logo"
_"C_hrome..."
_"Create a simplistic, but cool, chromed logo"
"Spencer Kimball"
"Spencer Kimball & Peter Mattis"
"1997"
""
SF-STRING _"Text" "GIMP"
SF-ADJUSTMENT _"Font size (pixels)" '(100 2 1000 1 10 0 1)
SF-FONT _"Font" "Bodoni"
SF-COLOR _"Background color" "lightgrey"
)
(script-fu-menu-register "script-fu-chrome-logo"
"<Image>/File/Create/Logos")