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If png_get_sRGB gives an answer, call png_set_gamma
using the default image gamma value.

callers changed.  If SELECTIONP is non-zero, run the
pre-write-conversion function before encoding the selection text.

if fullscreen is being set.

(syms_of_xfns): Intern and staticpro them.
(x_frame_parms) <"fullscreen">: New parameter.
(x_fullscreen_move, x_set_fullscreen): New functions.
(x_set_frame_parameters): Support for Qfullscreen.
(x_real_positions): More accurate computation of the frame position.
(x_figure_window_size): Support full-screen frames.
(Fx_create_frame): Default the fullscreen parameter.

to the left or to the right of the pointer, put it against
the left screen edge.

(visual_classes): Likewise.

a numeric value all the time.

(x_set_frame_parameters): Process Process `font' parameter before other
parameters as fringe widths depend on it.
(x_set_fringe_width): New function.
(x_figure_window_size): Use x_compute_fringe_widths.
(Fx_create_frame): Process `left-fringe' and `right-fringe' frame
parameters.

mouse position if either left or top is not specified.

Use renamed symbols.

Some x_set_* function expect to be called even if old and new
value are equal.

instead of IMAGE_BACKGROUND.

when X window doesn't exist yet.

a loop counter.

comparison.

(png_load): BG is a pointer to a structure, not a structure.
(gif_format, png_format): Add missing commas.

(four_corners_best): New functions.
(xpm_format, png_format, jpeg_format, tiff_format, gif_format)
(gs_format): Add `:background' entry.
(lookup_image): Set IMG's background color if specified.
(pbm_load, xbm_load_image, png_load): Set IMG's background field
when appropriate.
(x_clear_image_1): Reset `background_valid' and
`background_transparent_valid' fields.
(x_build_heuristic_mask): Use IMAGE_BACKGROUND instead of
calculating it here.  Set IMG's background_transparent field.
(enum xpm_keyword_index): Add XPM_BACKGROUND.
(enum png_keyword_index): Add PNG_BACKGROUND.
(enum jpeg_keyword_index): Add JPEG_BACKGROUND.
(enum tiff_keyword_index): Add TIFF_BACKGROUND.
(enum gif_keyword_index): Add GIF_BACKGROUND.
(enum gs_keyword_index): Add GS_BACKGROUND.
(pbm_load, png_load, jpeg_load, tiff_load, gif_load):
Pre-calculate image background color where necessary.

and `max_height'.

Free scroll-bar shadow colors when the background color changes.
(Fx_create_frame, x_create_tip_frame) [USE_TOOLKIT_SCROLL_BARS]:
Initialize scroll-bar shadow-color fields.

(tiff_load): Install them as error and warning handler.

the image cache under us.