- (let ((dir (nnheader-find-etc-directory "gnus"))
- pixmap file height beg i)
- (save-excursion
- (switch-to-buffer (gnus-get-buffer-create gnus-group-buffer))
- (let ((buffer-read-only nil))
- (erase-buffer)
- (when (and dir
- (file-exists-p (setq file (concat dir "x-splash"))))
- (with-temp-buffer
- (insert-file-contents file)
- (goto-char (point-min))
- (ignore-errors
- (setq pixmap (read (current-buffer))))))
- (when pixmap
- (erase-buffer)
- (unless (facep 'gnus-splash)
- (make-face 'gnus-splash))
- (setq height (/ (car pixmap) (frame-char-height))
- width (/ (cadr pixmap) (frame-char-width)))
- (set-face-foreground 'gnus-splash "Brown")
- (set-face-stipple 'gnus-splash pixmap)
- (insert-char ?\n (* (/ (window-height) 2 height) height))
- (setq i height)
- (while (> i 0)
- (insert-char ? (* (+ (/ (window-width) 2 width) 1) width))
- (setq beg (point))
- (insert-char ? width)
- (set-text-properties beg (point) '(face gnus-splash))
- (insert "\n")
- (decf i))
- (goto-char (point-min))
- (sit-for 0))))))
+ (interactive)
+ (unless window-system
+ (error "`gnus-x-splash' requires running on the window system"))
+ (switch-to-buffer (gnus-get-buffer-create (if (or (gnus-alive-p)
+ (interactive-p))
+ "*gnus-x-splash*"
+ gnus-group-buffer)))
+ (let ((inhibit-read-only t)
+ (file (nnheader-find-etc-directory "images/gnus/x-splash" t))
+ pixmap fcw fch width height fringes sbars left yoffset top ls)
+ (erase-buffer)
+ (sit-for 0) ;; Necessary for measuring the window size correctly.
+ (when (and file
+ (ignore-errors
+ (let ((coding-system-for-read 'raw-text))
+ (with-temp-buffer
+ (mm-disable-multibyte)
+ (insert-file-contents file)
+ (goto-char (point-min))
+ (setq pixmap (read (current-buffer)))))))
+ (setq fcw (float (frame-char-width))
+ fch (float (frame-char-height))
+ width (/ (car pixmap) fcw)
+ height (/ (cadr pixmap) fch)
+ fringes (if (fboundp 'window-fringes)
+ (eval '(window-fringes))
+ '(10 11 nil))
+ sbars (frame-parameter nil 'vertical-scroll-bars))
+ (cond ((eq sbars 'right)
+ (setq sbars
+ (cons 0 (/ (or (frame-parameter nil 'scroll-bar-width) 14)
+ fcw))))
+ (sbars
+ (setq sbars
+ (cons (/ (or (frame-parameter nil 'scroll-bar-width) 14)
+ fcw)
+ 0)))
+ (t
+ (setq sbars '(0 . 0))))
+ (setq left (- (* (round (/ (1- (/ (+ (window-width)
+ (car sbars) (cdr sbars)
+ (/ (+ (or (car fringes) 0)
+ (or (cadr fringes) 0))
+ fcw))
+ width))
+ 2))
+ width)
+ (car sbars)
+ (/ (or (car fringes) 0) fcw))
+ yoffset (cadr (window-edges))
+ top (max 0 (- (* (max (if (and (boundp 'tool-bar-mode)
+ tool-bar-mode
+ (not (featurep 'gtk))
+ (eq (frame-first-window)
+ (selected-window)))
+ 1 0)
+ (round (/ (1- (/ (+ (1- (window-height))
+ (* 2 yoffset))
+ height))
+ 2)))
+ height)
+ yoffset))
+ ls (/ (or line-spacing 0) fch)
+ height (max 0 (- height ls)))
+ (cond ((>= (- top ls) 1)
+ (insert
+ (propertize
+ " "
+ 'display `(space :width 0 :ascent 100))
+ "\n"
+ (propertize
+ " "
+ 'display `(space :width 0 :height ,(- top ls 1) :ascent 100))
+ "\n"))
+ ((> (- top ls) 0)
+ (insert
+ (propertize
+ " "
+ 'display `(space :width 0 :height ,(- top ls) :ascent 100))
+ "\n")))
+ (if (and (> width 0) (> left 0))
+ (insert (propertize
+ " "
+ 'display `(space :width ,left :height ,height :ascent 0)))
+ (setq width (+ width left)))
+ (when (> width 0)
+ (insert (propertize
+ " "
+ 'display `(space :width ,width :height ,height :ascent 0)
+ 'face `(gnus-splash :stipple ,pixmap))))
+ (goto-char (if (<= (- top ls) 0) (1- (point)) (point-min)))
+ (redraw-frame (selected-frame))
+ (sit-for 0))))
+
+;;; Image functions.
+
+(defun gnus-image-type-available-p (type)
+ (and (fboundp 'image-type-available-p)
+ (image-type-available-p type)
+ (if (fboundp 'display-images-p)
+ (display-images-p)
+ t)))
+
+(defun gnus-create-image (file &optional type data-p &rest props)
+ (let ((face (plist-get props :face)))
+ (when face
+ (setq props (plist-put props :foreground (face-foreground face)))
+ (setq props (plist-put props :background (face-background face))))
+ (apply 'create-image file type data-p props)))
+
+(defun gnus-put-image (glyph &optional string category)
+ (let ((point (point)))
+ (insert-image glyph (or string " "))
+ (put-text-property point (point) 'gnus-image-category category)
+ (unless string
+ (put-text-property (1- (point)) (point)
+ 'gnus-image-text-deletable t))
+ glyph))
+
+(defun gnus-remove-image (image &optional category)
+ "Remove the image matching IMAGE and CATEGORY found first."
+ (let ((start (point-min))
+ val end)
+ (while (and (not end)
+ (or (setq val (get-text-property start 'display))
+ (and (setq start
+ (next-single-property-change start 'display))
+ (setq val (get-text-property start 'display)))))
+ (setq end (or (next-single-property-change start 'display)
+ (point-max)))
+ (if (and (equal val image)
+ (equal (get-text-property start 'gnus-image-category)
+ category))
+ (progn
+ (put-text-property start end 'display nil)
+ (when (get-text-property start 'gnus-image-text-deletable)
+ (delete-region start end)))
+ (unless (= end (point-max))
+ (setq start end
+ end nil))))))