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patch 7.4.2089

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Problem:    Color handling of X11 GUIs is too complicated.
Solution:   Simplify the code.  Use RGBA where appropriate. (Kazunobu
            Kuriyama)
This commit is contained in:
Bram Moolenaar
2016-07-21 22:10:12 +02:00
parent f36213597d
commit 36edf0685c
5 changed files with 125 additions and 197 deletions
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244
src/gui_gtk_x11.c
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@@ -2865,8 +2865,10 @@ create_blank_pointer(void)
GdkPixmap *blank_mask;
#endif
GdkCursor *cursor;
#if GTK_CHECK_VERSION(3,0,0)
GdkRGBA color = { 0.0, 0.0, 0.0, 1.0 };
#else
GdkColor color = { 0, 0, 0, 0 };
#if !GTK_CHECK_VERSION(3,0,0)
char blank_data[] = { 0x0 };
#endif
@@ -2892,10 +2894,11 @@ create_blank_pointer(void)
surf = cairo_image_surface_create(CAIRO_FORMAT_A1, 1, 1);
cr = cairo_create(surf);
cairo_set_source_rgb(cr,
color.red / 65535.0,
color.green / 65535.0,
color.blue / 65535.0);
cairo_set_source_rgba(cr,
color.red,
color.green,
color.blue,
color.alpha);
cairo_rectangle(cr, 0, 0, 1, 1);
cairo_fill(cr);
cairo_destroy(cr);
@@ -3824,12 +3827,18 @@ gui_mch_init(void)
gui.border_width = 2;
gui.scrollbar_width = SB_DEFAULT_WIDTH;
gui.scrollbar_height = SB_DEFAULT_WIDTH;
#if GTK_CHECK_VERSION(3,0,0)
gui.fgcolor = g_new(GdkRGBA, 1);
gui.bgcolor = g_new(GdkRGBA, 1);
gui.spcolor = g_new(GdkRGBA, 1);
#else
/* LINTED: avoid warning: conversion to 'unsigned long' */
gui.fgcolor = g_new0(GdkColor, 1);
/* LINTED: avoid warning: conversion to 'unsigned long' */
gui.bgcolor = g_new0(GdkColor, 1);
/* LINTED: avoid warning: conversion to 'unsigned long' */
gui.spcolor = g_new0(GdkColor, 1);
#endif
/* Initialise atoms */
html_atom = gdk_atom_intern("text/html", FALSE);
@@ -4344,63 +4353,22 @@ gui_mch_forked(void)
#endif /* FEAT_GUI_GNOME && FEAT_SESSION */
#if GTK_CHECK_VERSION(3,0,0)
static void
gui_gtk_get_rgb_from_pixel(guint32 pixel, GdkRGBA *result)
static GdkRGBA
color_to_rgba(guicolor_T color)
{
GdkVisual * const visual = gtk_widget_get_visual(gui.drawarea);
guint32 r_mask, g_mask, b_mask;
gint r_shift, g_shift, b_shift;
if (visual == NULL)
{
result->red = 0.0;
result->green = 0.0;
result->blue = 0.0;
result->alpha = 0.0;
return;
}
gdk_visual_get_red_pixel_details(visual, &r_mask, &r_shift, NULL);
gdk_visual_get_green_pixel_details(visual, &g_mask, &g_shift, NULL);
gdk_visual_get_blue_pixel_details(visual, &b_mask, &b_shift, NULL);
result->red = ((pixel & r_mask) >> r_shift) / 255.0;
result->green = ((pixel & g_mask) >> g_shift) / 255.0;
result->blue = ((pixel & b_mask) >> b_shift) / 255.0;
result->alpha = 1.0;
}
/* Convert a GdRGBA into a pixel value using drawarea's visual */
static guint32
gui_gtk_get_pixel_from_rgb(const GdkRGBA *rgba)
{
GdkVisual * const visual = gtk_widget_get_visual(gui.drawarea);
guint32 r_mask, g_mask, b_mask;
gint r_shift, g_shift, b_shift;
guint32 r, g, b;
if (visual == NULL)
return 0;
gdk_visual_get_red_pixel_details(visual, &r_mask, &r_shift, NULL);
gdk_visual_get_green_pixel_details(visual, &g_mask, &g_shift, NULL);
gdk_visual_get_blue_pixel_details(visual, &b_mask, &b_shift, NULL);
r = rgba->red * 65535;
g = rgba->green * 65535;
b = rgba->blue * 65535;
return ((r << r_shift) & r_mask) |
((g << g_shift) & g_mask) |
((b << b_shift) & b_mask);
GdkRGBA rgba;
rgba.red = ((color & 0xff0000) >> 16) / 255.0;
rgba.green = ((color & 0xff00) >> 8) / 255.0;
rgba.blue = ((color & 0xff)) / 255.0;
rgba.alpha = 1.0;
return rgba;
}
static void
set_cairo_source_rgb_from_pixel(cairo_t *cr, guint32 pixel)
set_cairo_source_rgba_from_color(cairo_t *cr, guicolor_T color)
{
GdkRGBA result;
gui_gtk_get_rgb_from_pixel(pixel, &result);
cairo_set_source_rgb(cr, result.red, result.green, result.blue);
const GdkRGBA rgba = color_to_rgba(color);
cairo_set_source_rgba(cr, rgba.red, rgba.green, rgba.blue, rgba.alpha);
}
#endif /* GTK_CHECK_VERSION(3,0,0) */
@@ -4421,19 +4389,19 @@ gui_mch_new_colors(void)
#endif
{
#if GTK_CHECK_VERSION(3,4,0)
GdkRGBA color;
GdkRGBA rgba;
gui_gtk_get_rgb_from_pixel(gui.back_pixel, &color);
rgba = color_to_rgba(gui.back_pixel);
{
cairo_pattern_t * const pat = cairo_pattern_create_rgba(
color.red, color.green, color.blue, color.alpha);
rgba.red, rgba.green, rgba.blue, rgba.alpha);
if (pat != NULL)
{
gdk_window_set_background_pattern(da_win, pat);
cairo_pattern_destroy(pat);
}
else
gdk_window_set_background_rgba(da_win, &color);
gdk_window_set_background_rgba(da_win, &rgba);
}
#else /* !GTK_CHECK_VERSION(3,4,0) */
GdkColor color = { 0, 0, 0, 0 };
@@ -5518,93 +5486,36 @@ gui_mch_free_font(GuiFont font)
}
/*
* Return the Pixel value (color) for the given color name. This routine was
* pretty much taken from example code in the Silicon Graphics OSF/Motif
* Programmer's Guide.
* Return the Pixel value (color) for the given color name.
*
* Return INVALCOLOR for error.
*/
guicolor_T
gui_mch_get_color(char_u *name)
{
/* A number of colors that some X11 systems don't have */
static const char *const vimnames[][2] =
{
{"LightRed", "#FFBBBB"},
{"LightGreen", "#88FF88"},
{"LightMagenta","#FFBBFF"},
{"DarkCyan", "#008888"},
{"DarkBlue", "#0000BB"},
{"DarkRed", "#BB0000"},
{"DarkMagenta", "#BB00BB"},
{"DarkGrey", "#BBBBBB"},
{"DarkYellow", "#BBBB00"},
{"Gray10", "#1A1A1A"},
{"Grey10", "#1A1A1A"},
{"Gray20", "#333333"},
{"Grey20", "#333333"},
{"Gray30", "#4D4D4D"},
{"Grey30", "#4D4D4D"},
{"Gray40", "#666666"},
{"Grey40", "#666666"},
{"Gray50", "#7F7F7F"},
{"Grey50", "#7F7F7F"},
{"Gray60", "#999999"},
{"Grey60", "#999999"},
{"Gray70", "#B3B3B3"},
{"Grey70", "#B3B3B3"},
{"Gray80", "#CCCCCC"},
{"Grey80", "#CCCCCC"},
{"Gray90", "#E5E5E5"},
{"Grey90", "#E5E5E5"},
{NULL, NULL}
};
if (!gui.in_use) /* can't do this when GUI not running */
return INVALCOLOR;
while (name != NULL)
{
#if GTK_CHECK_VERSION(3,0,0)
GdkRGBA color;
return name != NULL ? gui_get_color_cmn(name) : INVALCOLOR;
#else
GdkColor color;
#endif
int parsed;
int i;
guicolor_T color;
GdkColor gcolor;
int ret;
#if GTK_CHECK_VERSION(3,0,0)
parsed = gdk_rgba_parse(&color, (const gchar *)name);
#else
parsed = gdk_color_parse((const char *)name, &color);
#endif
color = (name != NULL) ? gui_get_color_cmn(name) : INVALCOLOR;
if (color == INVALCOLOR)
return INVALCOLOR;
if (parsed)
{
#if GTK_CHECK_VERSION(3,0,0)
return (guicolor_T)gui_gtk_get_pixel_from_rgb(&color);
#else
gdk_colormap_alloc_color(gtk_widget_get_colormap(gui.drawarea),
&color, FALSE, TRUE);
return (guicolor_T)color.pixel;
#endif
}
/* add a few builtin names and try again */
for (i = 0; ; ++i)
{
if (vimnames[i][0] == NULL)
{
name = NULL;
break;
}
if (STRICMP(name, vimnames[i][0]) == 0)
{
name = (char_u *)vimnames[i][1];
break;
}
}
}
gcolor.red = (guint16)(((color & 0xff0000) >> 16) / 255.0 * 65535 + 0.5);
gcolor.green = (guint16)(((color & 0xff00) >> 8) / 255.0 * 65535 + 0.5);
gcolor.blue = (guint16)((color & 0xff) / 255.0 * 65535 + 0.5);
return INVALCOLOR;
ret = gdk_colormap_alloc_color(gtk_widget_get_colormap(gui.drawarea),
&gcolor, FALSE, TRUE);
return ret != 0 ? (guicolor_T)gcolor.pixel : INVALCOLOR;
#endif
}
/*
@@ -5613,7 +5524,11 @@ gui_mch_get_color(char_u *name)
void
gui_mch_set_fg_color(guicolor_T color)
{
#if GTK_CHECK_VERSION(3,0,0)
*gui.fgcolor = color_to_rgba(color);
#else
gui.fgcolor->pixel = (unsigned long)color;
#endif
}
/*
@@ -5622,7 +5537,11 @@ gui_mch_set_fg_color(guicolor_T color)
void
gui_mch_set_bg_color(guicolor_T color)
{
#if GTK_CHECK_VERSION(3,0,0)
*gui.bgcolor = color_to_rgba(color);
#else
gui.bgcolor->pixel = (unsigned long)color;
#endif
}
/*
@@ -5631,7 +5550,11 @@ gui_mch_set_bg_color(guicolor_T color)
void
gui_mch_set_sp_color(guicolor_T color)
{
#if GTK_CHECK_VERSION(3,0,0)
*gui.spcolor = color_to_rgba(color);
#else
gui.spcolor->pixel = (unsigned long)color;
#endif
}
/*
@@ -5792,7 +5715,9 @@ draw_glyph_string(int row, int col, int num_cells, int flags,
if (!(flags & DRAW_TRANSP))
{
#if GTK_CHECK_VERSION(3,0,0)
set_cairo_source_rgb_from_pixel(cr, gui.bgcolor->pixel);
cairo_set_source_rgba(cr,
gui.bgcolor->red, gui.bgcolor->green, gui.bgcolor->blue,
gui.bgcolor->alpha);
cairo_rectangle(cr,
FILL_X(col), FILL_Y(row),
num_cells * gui.char_width, gui.char_height);
@@ -5811,7 +5736,9 @@ draw_glyph_string(int row, int col, int num_cells, int flags,
}
#if GTK_CHECK_VERSION(3,0,0)
set_cairo_source_rgb_from_pixel(cr, gui.fgcolor->pixel);
cairo_set_source_rgba(cr,
gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
gui.fgcolor->alpha);
cairo_move_to(cr, TEXT_X(col), TEXT_Y(row));
pango_cairo_show_glyph_string(cr, font, glyphs);
#else
@@ -5829,7 +5756,9 @@ draw_glyph_string(int row, int col, int num_cells, int flags,
if ((flags & DRAW_BOLD) && !gui.font_can_bold)
#if GTK_CHECK_VERSION(3,0,0)
{
set_cairo_source_rgb_from_pixel(cr, gui.fgcolor->pixel);
cairo_set_source_rgba(cr,
gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
gui.fgcolor->alpha);
cairo_move_to(cr, TEXT_X(col) + 1, TEXT_Y(row));
pango_cairo_show_glyph_string(cr, font, glyphs);
}
@@ -5865,7 +5794,9 @@ draw_under(int flags, int row, int col, int cells)
#if GTK_CHECK_VERSION(3,0,0)
cairo_set_line_width(cr, 1.0);
cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
set_cairo_source_rgb_from_pixel(cr, gui.spcolor->pixel);
cairo_set_source_rgba(cr,
gui.spcolor->red, gui.spcolor->green, gui.spcolor->blue,
gui.spcolor->alpha);
for (i = FILL_X(col); i < FILL_X(col + cells); ++i)
{
offset = val[i % 8];
@@ -5894,7 +5825,9 @@ draw_under(int flags, int row, int col, int cells)
{
cairo_set_line_width(cr, 1.0);
cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
set_cairo_source_rgb_from_pixel(cr, gui.fgcolor->pixel);
cairo_set_source_rgba(cr,
gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
gui.fgcolor->alpha);
cairo_move_to(cr, FILL_X(col), y + 0.5);
cairo_line_to(cr, FILL_X(col + cells), y + 0.5);
cairo_stroke(cr);
@@ -6361,7 +6294,7 @@ gui_mch_invert_rectangle(int r, int c, int nr, int nc)
};
cairo_t * const cr = cairo_create(gui.surface);
set_cairo_source_rgb_from_pixel(cr, gui.norm_pixel ^ gui.back_pixel);
set_cairo_source_rgba_from_color(cr, gui.norm_pixel ^ gui.back_pixel);
# if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1,9,2)
cairo_set_operator(cr, CAIRO_OPERATOR_DIFFERENCE);
# else
@@ -6445,7 +6378,9 @@ gui_mch_draw_hollow_cursor(guicolor_T color)
gui_mch_set_fg_color(color);
#if GTK_CHECK_VERSION(3,0,0)
set_cairo_source_rgb_from_pixel(cr, gui.fgcolor->pixel);
cairo_set_source_rgba(cr,
gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
gui.fgcolor->alpha);
#else
gdk_gc_set_foreground(gui.text_gc, gui.fgcolor);
#endif
@@ -6488,7 +6423,9 @@ gui_mch_draw_part_cursor(int w, int h, guicolor_T color)
cairo_t *cr;
cr = cairo_create(gui.surface);
set_cairo_source_rgb_from_pixel(cr, gui.fgcolor->pixel);
cairo_set_source_rgba(cr,
gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
gui.fgcolor->alpha);
cairo_rectangle(cr,
# ifdef FEAT_RIGHTLEFT
/* vertical line should be on the right of current point */
@@ -6686,7 +6623,7 @@ gui_mch_clear_block(int row1, int col1, int row2, int col2)
if (pat != NULL)
cairo_set_source(cr, pat);
else
set_cairo_source_rgb_from_pixel(cr, gui.back_pixel);
set_cairo_source_rgba_from_color(cr, gui.back_pixel);
gdk_cairo_rectangle(cr, &rect);
cairo_fill(cr);
cairo_destroy(cr);
@@ -6719,7 +6656,7 @@ gui_gtk_window_clear(GdkWindow *win)
if (pat != NULL)
cairo_set_source(cr, pat);
else
set_cairo_source_rgb_from_pixel(cr, gui.back_pixel);
set_cairo_source_rgba_from_color(cr, gui.back_pixel);
gdk_cairo_rectangle(cr, &rect);
cairo_fill(cr);
cairo_destroy(cr);
@@ -7079,23 +7016,18 @@ gui_mch_enable_scrollbar(scrollbar_T *sb, int flag)
long_u
gui_mch_get_rgb(guicolor_T pixel)
{
GdkColor color;
#if GTK_CHECK_VERSION(3,0,0)
GdkRGBA rgba;
gui_gtk_get_rgb_from_pixel(pixel, &rgba);
color.red = rgba.red * 65535;
color.green = rgba.green * 65535;
color.blue = rgba.blue * 65535;
return (long_u)pixel;
#else
GdkColor color;
gdk_colormap_query_color(gtk_widget_get_colormap(gui.drawarea),
(unsigned long)pixel, &color);
#endif
return (((unsigned)color.red & 0xff00) << 8)
| ((unsigned)color.green & 0xff00)
| (((unsigned)color.blue & 0xff00) >> 8);
#endif
}
/*
@@ -7355,7 +7287,9 @@ gui_mch_drawsign(int row, int col, int typenr)
cairo_surface_get_content(gui.surface),
SIGN_WIDTH, SIGN_HEIGHT);
bg_cr = cairo_create(bg_surf);
set_cairo_source_rgb_from_pixel(bg_cr, gui.bgcolor->pixel);
cairo_set_source_rgba(bg_cr,
gui.bgcolor->red, gui.bgcolor->green, gui.bgcolor->blue,
gui.bgcolor->alpha);
cairo_paint(bg_cr);
sign_surf = cairo_surface_create_similar(gui.surface,