From 041d1ea37802bf7178a31a53f96c26efa6b8fb7b Mon Sep 17 00:00:00 2001 From: James Date: Fri, 16 Nov 2012 10:41:01 +0000 Subject: fish --- grub-core/gfxmenu/widget-box.c | 310 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 310 insertions(+) create mode 100644 grub-core/gfxmenu/widget-box.c (limited to 'grub-core/gfxmenu/widget-box.c') diff --git a/grub-core/gfxmenu/widget-box.c b/grub-core/gfxmenu/widget-box.c new file mode 100644 index 0000000..41ca7f5 --- /dev/null +++ b/grub-core/gfxmenu/widget-box.c @@ -0,0 +1,310 @@ +/* widget_box.c - Pixmap-stylized box widget. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008,2009 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see . + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +enum box_pixmaps +{ + BOX_PIXMAP_NW, BOX_PIXMAP_NE, BOX_PIXMAP_SE, BOX_PIXMAP_SW, + BOX_PIXMAP_N, BOX_PIXMAP_E, BOX_PIXMAP_S, BOX_PIXMAP_W, + BOX_PIXMAP_CENTER +}; + +static const char *box_pixmap_names[] = { + /* Corners: */ + "nw", "ne", "se", "sw", + /* Sides: */ + "n", "e", "s", "w", + /* Center: */ + "c" +}; + +#define BOX_NUM_PIXMAPS (sizeof(box_pixmap_names)/sizeof(*box_pixmap_names)) + +static int +get_height (struct grub_video_bitmap *bitmap) +{ + if (bitmap) + return grub_video_bitmap_get_height (bitmap); + else + return 0; +} + +static int +get_width (struct grub_video_bitmap *bitmap) +{ + if (bitmap) + return grub_video_bitmap_get_width (bitmap); + else + return 0; +} + +static void +blit (grub_gfxmenu_box_t self, int pixmap_index, int x, int y) +{ + struct grub_video_bitmap *bitmap; + bitmap = self->scaled_pixmaps[pixmap_index]; + if (! bitmap) + return; + grub_video_blit_bitmap (bitmap, GRUB_VIDEO_BLIT_BLEND, + x, y, 0, 0, + grub_video_bitmap_get_width (bitmap), + grub_video_bitmap_get_height (bitmap)); +} + +static void +draw (grub_gfxmenu_box_t self, int x, int y) +{ + int height_n; + int width_w; + + height_n = get_height (self->scaled_pixmaps[BOX_PIXMAP_N]); + width_w = get_width (self->scaled_pixmaps[BOX_PIXMAP_W]); + + /* Draw sides. */ + blit (self, BOX_PIXMAP_N, x + width_w, y); + blit (self, BOX_PIXMAP_S, x + width_w, y + height_n + self->content_height); + blit (self, BOX_PIXMAP_E, x + width_w + self->content_width, y + height_n); + blit (self, BOX_PIXMAP_W, x, y + height_n); + + /* Draw corners. */ + blit (self, BOX_PIXMAP_NW, x, y); + blit (self, BOX_PIXMAP_NE, x + width_w + self->content_width, y); + blit (self, BOX_PIXMAP_SE, + x + width_w + self->content_width, + y + height_n + self->content_height); + blit (self, BOX_PIXMAP_SW, x, y + height_n + self->content_height); + + /* Draw center. */ + blit (self, BOX_PIXMAP_CENTER, x + width_w, y + height_n); +} + +static grub_err_t +scale_pixmap (grub_gfxmenu_box_t self, int i, int w, int h) +{ + struct grub_video_bitmap **scaled = &self->scaled_pixmaps[i]; + struct grub_video_bitmap *raw = self->raw_pixmaps[i]; + + if (raw == 0) + return grub_errno; + + if (w == -1) + w = grub_video_bitmap_get_width (raw); + if (h == -1) + h = grub_video_bitmap_get_height (raw); + + if (*scaled == 0 + || ((int) grub_video_bitmap_get_width (*scaled) != w) + || ((int) grub_video_bitmap_get_height (*scaled) != h)) + { + if (*scaled) + { + grub_video_bitmap_destroy (*scaled); + *scaled = 0; + } + + /* Don't try to create a bitmap with a zero dimension. */ + if (w != 0 && h != 0) + grub_video_bitmap_create_scaled (scaled, w, h, raw, + GRUB_VIDEO_BITMAP_SCALE_METHOD_BEST); + if (grub_errno != GRUB_ERR_NONE) + { + grub_error_push (); + grub_error (grub_errno, + "failed to scale bitmap for styled box pixmap #%d", i); + } + } + + return grub_errno; +} + +static void +set_content_size (grub_gfxmenu_box_t self, + int width, int height) +{ + self->content_width = width; + self->content_height = height; + + /* Resize sides to match the width and height. */ + /* It is assumed that the corners width/height match the adjacent sides. */ + + /* Resize N and S sides to match width. */ + if (scale_pixmap(self, BOX_PIXMAP_N, width, -1) != GRUB_ERR_NONE) + return; + if (scale_pixmap(self, BOX_PIXMAP_S, width, -1) != GRUB_ERR_NONE) + return; + + /* Resize E and W sides to match height. */ + if (scale_pixmap(self, BOX_PIXMAP_E, -1, height) != GRUB_ERR_NONE) + return; + if (scale_pixmap(self, BOX_PIXMAP_W, -1, height) != GRUB_ERR_NONE) + return; + + /* Don't scale the corners--they are assumed to match the sides. */ + if (scale_pixmap(self, BOX_PIXMAP_NW, -1, -1) != GRUB_ERR_NONE) + return; + if (scale_pixmap(self, BOX_PIXMAP_SW, -1, -1) != GRUB_ERR_NONE) + return; + if (scale_pixmap(self, BOX_PIXMAP_NE, -1, -1) != GRUB_ERR_NONE) + return; + if (scale_pixmap(self, BOX_PIXMAP_SE, -1, -1) != GRUB_ERR_NONE) + return; + + /* Scale the center area. */ + if (scale_pixmap(self, BOX_PIXMAP_CENTER, width, height) != GRUB_ERR_NONE) + return; +} + +static int +get_border_width (grub_gfxmenu_box_t self) +{ + return (get_width (self->raw_pixmaps[BOX_PIXMAP_E]) + + get_width (self->raw_pixmaps[BOX_PIXMAP_W])); +} + +static int +get_left_pad (grub_gfxmenu_box_t self) +{ + return get_width (self->raw_pixmaps[BOX_PIXMAP_W]); +} + +static int +get_top_pad (grub_gfxmenu_box_t self) +{ + return get_height (self->raw_pixmaps[BOX_PIXMAP_N]); +} + +static int +get_right_pad (grub_gfxmenu_box_t self) +{ + return get_width (self->raw_pixmaps[BOX_PIXMAP_E]); +} + +static int +get_bottom_pad (grub_gfxmenu_box_t self) +{ + return get_height (self->raw_pixmaps[BOX_PIXMAP_S]); +} + +static void +destroy (grub_gfxmenu_box_t self) +{ + unsigned i; + for (i = 0; i < BOX_NUM_PIXMAPS; i++) + { + if (self->raw_pixmaps[i]) + grub_video_bitmap_destroy(self->raw_pixmaps[i]); + self->raw_pixmaps[i] = 0; + + if (self->scaled_pixmaps[i]) + grub_video_bitmap_destroy(self->scaled_pixmaps[i]); + self->scaled_pixmaps[i] = 0; + } + grub_free (self->raw_pixmaps); + self->raw_pixmaps = 0; + grub_free (self->scaled_pixmaps); + self->scaled_pixmaps = 0; + + /* Free self: must be the last step! */ + grub_free (self); +} + + +/* Create a new box. If PIXMAPS_PREFIX and PIXMAPS_SUFFIX are both non-null, + then an attempt is made to load the north, south, east, west, northwest, + northeast, southeast, southwest, and center pixmaps. + If either PIXMAPS_PREFIX or PIXMAPS_SUFFIX is 0, then no pixmaps are + loaded, and the box has zero-width borders and is drawn transparent. */ +grub_gfxmenu_box_t +grub_gfxmenu_create_box (const char *pixmaps_prefix, + const char *pixmaps_suffix) +{ + unsigned i; + grub_gfxmenu_box_t box; + + box = (grub_gfxmenu_box_t) grub_malloc (sizeof (*box)); + if (! box) + return 0; + + box->content_width = 0; + box->content_height = 0; + box->raw_pixmaps = + (struct grub_video_bitmap **) + grub_malloc (BOX_NUM_PIXMAPS * sizeof (struct grub_video_bitmap *)); + box->scaled_pixmaps = + (struct grub_video_bitmap **) + grub_malloc (BOX_NUM_PIXMAPS * sizeof (struct grub_video_bitmap *)); + + /* Initialize all pixmap pointers to NULL so that proper destruction can + be performed if an error is encountered partway through construction. */ + for (i = 0; i < BOX_NUM_PIXMAPS; i++) + box->raw_pixmaps[i] = 0; + for (i = 0; i < BOX_NUM_PIXMAPS; i++) + box->scaled_pixmaps[i] = 0; + + /* Load the pixmaps. */ + for (i = 0; i < BOX_NUM_PIXMAPS; i++) + { + if (pixmaps_prefix && pixmaps_suffix) + { + char *path; + char *path_end; + + path = grub_malloc (grub_strlen (pixmaps_prefix) + + grub_strlen (box_pixmap_names[i]) + + grub_strlen (pixmaps_suffix) + + 1); + if (! path) + goto fail_and_destroy; + + /* Construct the specific path for this pixmap. */ + path_end = grub_stpcpy (path, pixmaps_prefix); + path_end = grub_stpcpy (path_end, box_pixmap_names[i]); + path_end = grub_stpcpy (path_end, pixmaps_suffix); + + grub_video_bitmap_load (&box->raw_pixmaps[i], path); + grub_free (path); + + /* Ignore missing pixmaps. */ + grub_errno = GRUB_ERR_NONE; + } + } + + box->draw = draw; + box->set_content_size = set_content_size; + box->get_border_width = get_border_width; + + box->get_left_pad = get_left_pad; + box->get_top_pad = get_top_pad; + box->get_right_pad = get_right_pad; + box->get_bottom_pad = get_bottom_pad; + box->destroy = destroy; + return box; + +fail_and_destroy: + destroy (box); + return 0; +} -- cgit v1.2.3