X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Foutput%2Fcairo.c;h=101040fec7f50b757be5fd40e60fb7967741768a;hb=d53d15d6cf01b293b87997fba03d6e5a5fd9f8a0;hp=e619088fa41ed00a3985cda38a0d2e3d441a8e54;hpb=72d48b1e7b54b438ba266ffc74e7e9f816629a1f;p=pspp diff --git a/src/output/cairo.c b/src/output/cairo.c index e619088fa4..101040fec7 100644 --- a/src/output/cairo.c +++ b/src/output/cairo.c @@ -29,6 +29,7 @@ #include "libpspp/version.h" #include "data/file-handle-def.h" #include "output/cairo-chart.h" +#include "output/cairo-fsm.h" #include "output/chart-item-provider.h" #include "output/charts/boxplot.h" #include "output/charts/np-plot.h" @@ -43,6 +44,7 @@ #include "output/group-item.h" #include "output/message-item.h" #include "output/options.h" +#include "output/page-eject-item.h" #include "output/page-setup-item.h" #include "output/render.h" #include "output/table-item.h" @@ -52,6 +54,7 @@ #include #include #include + #include #include #include @@ -85,13 +88,6 @@ xr_to_pt (int x) return x / (double) XR_POINT; } -/* Conversion from 1/96" units ("pixels") to Cairo/Pango units. */ -static int -px_to_xr (int x) -{ - return x * (PANGO_SCALE * 72 / 96); -} - /* Dimensions for drawing lines in tables. */ #define XR_LINE_WIDTH (XR_POINT / 2) /* Width of an ordinary line. */ #define XR_LINE_SPACE XR_POINT /* Space between double lines. */ @@ -104,15 +100,6 @@ enum xr_output_type XR_SVG }; -/* Cairo fonts. */ -enum xr_font_type - { - XR_FONT_PROPORTIONAL, - XR_FONT_EMPHASIS, - XR_FONT_FIXED, - XR_N_FONTS - }; - /* A font for use with Cairo. */ struct xr_font { @@ -120,18 +107,6 @@ struct xr_font PangoLayout *layout; }; -/* An output item whose rendering is in progress. */ -struct xr_render_fsm - { - /* Renders as much of itself as it can on the current page. Returns true - if rendering is complete, false if the output item needs another - page. */ - bool (*render) (struct xr_render_fsm *, struct xr_driver *); - - /* Destroys the output item. */ - void (*destroy) (struct xr_render_fsm *); - }; - /* Cairo output driver. */ struct xr_driver { @@ -148,9 +123,6 @@ struct xr_driver int top_margin; /* Top margin in inch/(72 * XR_POINT). */ int bottom_margin; /* Bottom margin in inch/(72 * XR_POINT). */ - int line_space; /* Space between lines. */ - int line_width; /* Width of lines. */ - int min_break[TABLE_N_AXES]; /* Min cell size to break across pages. */ int object_spacing; /* Space between output objects. */ @@ -165,37 +137,20 @@ struct xr_driver int headings_height[2]; /* Internal state. */ - struct render_params *params; + struct xr_fsm_style *style; double font_scale; int char_width, char_height; cairo_t *cairo; cairo_surface_t *surface; int page_number; /* Current page number. */ int y; - struct xr_render_fsm *fsm; + struct xr_fsm *fsm; }; static const struct output_driver_class cairo_driver_class; static void xr_driver_destroy_fsm (struct xr_driver *); static void xr_driver_run_fsm (struct xr_driver *); - -static void xr_draw_line (void *, int bb[TABLE_N_AXES][2], - enum render_line_style styles[TABLE_N_AXES][2], - struct cell_color colors[TABLE_N_AXES][2]); -static void xr_measure_cell_width (void *, const struct table_cell *, - int *min, int *max); -static int xr_measure_cell_height (void *, const struct table_cell *, - int width); -static void xr_draw_cell (void *, const struct table_cell *, int color_idx, - int bb[TABLE_N_AXES][2], int valign_offset, - int spill[TABLE_N_AXES][2], - int clip[TABLE_N_AXES][2]); -static int xr_adjust_break (void *, const struct table_cell *, - int width, int height); - -static struct xr_render_fsm *xr_render_output_item ( - struct xr_driver *, const struct output_item *); /* Output driver basics. */ @@ -290,8 +245,6 @@ apply_options (struct xr_driver *xr, struct string_map *o) (d, o, "fixed-font", "monospace", font_size, false, false); xr->fonts[XR_FONT_PROPORTIONAL].desc = parse_font_option ( d, o, "prop-font", "sans serif", font_size, false, false); - xr->fonts[XR_FONT_EMPHASIS].desc = parse_font_option ( - d, o, "emph-font", "sans serif", font_size, false, true); xr->fg = parse_color (opt (d, o, "foreground-color", "#000000000000")); xr->bg = parse_color (opt (d, o, "background-color", "#FFFFFFFFFFFF")); @@ -506,36 +459,20 @@ xr_set_cairo (struct xr_driver *xr, cairo_t *cairo) pango_layout_set_font_description (font->layout, font->desc); } - if (xr->params == NULL) + if (xr->style == NULL) { - xr->params = xmalloc (sizeof *xr->params); - xr->params->draw_line = xr_draw_line; - xr->params->measure_cell_width = xr_measure_cell_width; - xr->params->measure_cell_height = xr_measure_cell_height; - xr->params->adjust_break = xr_adjust_break; - xr->params->draw_cell = xr_draw_cell; - xr->params->aux = xr; - xr->params->size[H] = xr->width; - xr->params->size[V] = xr->length; - xr->params->font_size[H] = xr->char_width; - xr->params->font_size[V] = xr->char_height; - - int lw = XR_LINE_WIDTH; - int ls = XR_LINE_SPACE; - for (int i = 0; i < TABLE_N_AXES; i++) - { - xr->params->line_widths[i][RENDER_LINE_NONE] = 0; - xr->params->line_widths[i][RENDER_LINE_SINGLE] = lw; - xr->params->line_widths[i][RENDER_LINE_DASHED] = lw; - xr->params->line_widths[i][RENDER_LINE_THICK] = lw * 2; - xr->params->line_widths[i][RENDER_LINE_THIN] = lw / 2; - xr->params->line_widths[i][RENDER_LINE_DOUBLE] = 2 * lw + ls; - } + xr->style = xmalloc (sizeof *xr->style); + *xr->style = (struct xr_fsm_style) { + .ref_cnt = 1, + .size = { [H] = xr->width, [V] = xr->length }, + .min_break = { [H] = xr->min_break[H], [V] = xr->min_break[V] }, + .use_system_colors = xr->systemcolors, + .transparent = xr->transparent, + .font_scale = xr->font_scale, + }; - for (int i = 0; i < TABLE_N_AXES; i++) - xr->params->min_break[i] = xr->min_break[i]; - xr->params->supports_margins = true; - xr->params->rtl = render_direction_rtl (); + for (size_t i = 0; i < XR_N_FONTS; i++) + xr->style->fonts[i] = pango_font_description_copy (xr->fonts[i].desc); } if (!xr->systemcolors) @@ -632,7 +569,7 @@ xr_destroy (struct output_driver *driver) g_object_unref (font->layout); } - free (xr->params); + xr_fsm_style_unref (xr->style); free (xr); } @@ -764,7 +701,7 @@ xr_driver_output_item (struct xr_driver *xr, const struct output_item *output_item) { assert (xr->fsm == NULL); - xr->fsm = xr_render_output_item (xr, output_item); + xr->fsm = xr_fsm_create (output_item, xr->style, xr->cairo); xr_driver_run_fsm (xr); } @@ -787,768 +724,24 @@ xr_driver_is_page_blank (const struct xr_driver *xr) static void xr_driver_destroy_fsm (struct xr_driver *xr) { - if (xr->fsm != NULL) - { - xr->fsm->destroy (xr->fsm); - xr->fsm = NULL; - } + xr_fsm_destroy (xr->fsm); + xr->fsm = NULL; } static void xr_driver_run_fsm (struct xr_driver *xr) { - if (xr->fsm != NULL && !xr->fsm->render (xr->fsm, xr)) - xr_driver_destroy_fsm (xr); -} - -static void -xr_layout_cell (struct xr_driver *, const struct table_cell *, - int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2], - int *width, int *height, int *brk); - -static void -set_source_rgba (cairo_t *cairo, const struct cell_color *color) -{ - cairo_set_source_rgba (cairo, - color->r / 255., color->g / 255., color->b / 255., - color->alpha / 255.); -} - -static void -dump_line (struct xr_driver *xr, int x0, int y0, int x1, int y1, int style, - const struct cell_color *color) -{ - cairo_new_path (xr->cairo); - if (!xr->systemcolors) - set_source_rgba (xr->cairo, color); - cairo_set_line_width ( - xr->cairo, - xr_to_pt (style == RENDER_LINE_THICK ? XR_LINE_WIDTH * 2 - : style == RENDER_LINE_THIN ? XR_LINE_WIDTH / 2 - : XR_LINE_WIDTH)); - cairo_move_to (xr->cairo, xr_to_pt (x0), xr_to_pt (y0 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x1), xr_to_pt (y1 + xr->y)); - cairo_stroke (xr->cairo); -} - -static void UNUSED -dump_rectangle (struct xr_driver *xr, int x0, int y0, int x1, int y1) -{ - cairo_new_path (xr->cairo); - cairo_set_line_width (xr->cairo, xr_to_pt (XR_LINE_WIDTH)); - cairo_close_path (xr->cairo); - cairo_stroke (xr->cairo); - cairo_move_to (xr->cairo, xr_to_pt (x0), xr_to_pt (y0 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x1), xr_to_pt (y0 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x1), xr_to_pt (y1 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x0), xr_to_pt (y1 + xr->y)); -} - -static void -fill_rectangle (struct xr_driver *xr, int x0, int y0, int x1, int y1) -{ - cairo_new_path (xr->cairo); - cairo_set_line_width (xr->cairo, xr_to_pt (XR_LINE_WIDTH)); - cairo_rectangle (xr->cairo, - xr_to_pt (x0), xr_to_pt (y0 + xr->y), - xr_to_pt (x1 - x0), xr_to_pt (y1 - y0)); - cairo_fill (xr->cairo); -} - -/* Draws a horizontal line X0...X2 at Y if LEFT says so, - shortening it to X0...X1 if SHORTEN is true. - Draws a horizontal line X1...X3 at Y if RIGHT says so, - shortening it to X2...X3 if SHORTEN is true. */ -static void -horz_line (struct xr_driver *xr, int x0, int x1, int x2, int x3, int y, - enum render_line_style left, enum render_line_style right, - const struct cell_color *left_color, - const struct cell_color *right_color, - bool shorten) -{ - if (left != RENDER_LINE_NONE && right != RENDER_LINE_NONE && !shorten - && cell_color_equal (left_color, right_color)) - dump_line (xr, x0, y, x3, y, left, left_color); - else - { - if (left != RENDER_LINE_NONE) - dump_line (xr, x0, y, shorten ? x1 : x2, y, left, left_color); - if (right != RENDER_LINE_NONE) - dump_line (xr, shorten ? x2 : x1, y, x3, y, right, right_color); - } -} - -/* Draws a vertical line Y0...Y2 at X if TOP says so, - shortening it to Y0...Y1 if SHORTEN is true. - Draws a vertical line Y1...Y3 at X if BOTTOM says so, - shortening it to Y2...Y3 if SHORTEN is true. */ -static void -vert_line (struct xr_driver *xr, int y0, int y1, int y2, int y3, int x, - enum render_line_style top, enum render_line_style bottom, - const struct cell_color *top_color, - const struct cell_color *bottom_color, - bool shorten) -{ - if (top != RENDER_LINE_NONE && bottom != RENDER_LINE_NONE && !shorten - && cell_color_equal (top_color, bottom_color)) - dump_line (xr, x, y0, x, y3, top, top_color); - else - { - if (top != RENDER_LINE_NONE) - dump_line (xr, x, y0, x, shorten ? y1 : y2, top, top_color); - if (bottom != RENDER_LINE_NONE) - dump_line (xr, x, shorten ? y2 : y1, x, y3, bottom, bottom_color); - } -} - -static void -xr_draw_line (void *xr_, int bb[TABLE_N_AXES][2], - enum render_line_style styles[TABLE_N_AXES][2], - struct cell_color colors[TABLE_N_AXES][2]) -{ - const int x0 = bb[H][0]; - const int y0 = bb[V][0]; - const int x3 = bb[H][1]; - const int y3 = bb[V][1]; - const int top = styles[H][0]; - const int bottom = styles[H][1]; - - int start_side = render_direction_rtl(); - int end_side = !start_side; - const int start_of_line = styles[V][start_side]; - const int end_of_line = styles[V][end_side]; - const struct cell_color *top_color = &colors[H][0]; - const struct cell_color *bottom_color = &colors[H][1]; - const struct cell_color *start_color = &colors[V][start_side]; - const struct cell_color *end_color = &colors[V][end_side]; - - /* The algorithm here is somewhat subtle, to allow it to handle - all the kinds of intersections that we need. - - Three additional ordinates are assigned along the x axis. The - first is xc, midway between x0 and x3. The others are x1 and - x2; for a single vertical line these are equal to xc, and for - a double vertical line they are the ordinates of the left and - right half of the double line. - - yc, y1, and y2 are assigned similarly along the y axis. - - The following diagram shows the coordinate system and output - for double top and bottom lines, single left line, and no - right line: - - x0 x1 xc x2 x3 - y0 ________________________ - | # # | - | # # | - | # # | - | # # | - | # # | - y1 = y2 = yc |######### # | - | # # | - | # # | - | # # | - | # # | - y3 |________#_____#_______| - */ - struct xr_driver *xr = xr_; - - /* Offset from center of each line in a pair of double lines. */ - int double_line_ofs = (XR_LINE_SPACE + XR_LINE_WIDTH) / 2; - - /* Are the lines along each axis single or double? - (It doesn't make sense to have different kinds of line on the - same axis, so we don't try to gracefully handle that case.) */ - bool double_vert = top == RENDER_LINE_DOUBLE || bottom == RENDER_LINE_DOUBLE; - bool double_horz = start_of_line == RENDER_LINE_DOUBLE || end_of_line == RENDER_LINE_DOUBLE; - - /* When horizontal lines are doubled, - the left-side line along y1 normally runs from x0 to x2, - and the right-side line along y1 from x3 to x1. - If the top-side line is also doubled, we shorten the y1 lines, - so that the left-side line runs only to x1, - and the right-side line only to x2. - Otherwise, the horizontal line at y = y1 below would cut off - the intersection, which looks ugly: - x0 x1 x2 x3 - y0 ________________________ - | # # | - | # # | - | # # | - | # # | - y1 |######### ########| - | | - | | - y2 |######################| - | | - | | - y3 |______________________| - It is more of a judgment call when the horizontal line is - single. We actually choose to cut off the line anyhow, as - shown in the first diagram above. - */ - bool shorten_y1_lines = top == RENDER_LINE_DOUBLE; - bool shorten_y2_lines = bottom == RENDER_LINE_DOUBLE; - bool shorten_yc_line = shorten_y1_lines && shorten_y2_lines; - int horz_line_ofs = double_vert ? double_line_ofs : 0; - int xc = (x0 + x3) / 2; - int x1 = xc - horz_line_ofs; - int x2 = xc + horz_line_ofs; - - bool shorten_x1_lines = start_of_line == RENDER_LINE_DOUBLE; - bool shorten_x2_lines = end_of_line == RENDER_LINE_DOUBLE; - bool shorten_xc_line = shorten_x1_lines && shorten_x2_lines; - int vert_line_ofs = double_horz ? double_line_ofs : 0; - int yc = (y0 + y3) / 2; - int y1 = yc - vert_line_ofs; - int y2 = yc + vert_line_ofs; - - if (!double_horz) - horz_line (xr, x0, x1, x2, x3, yc, start_of_line, end_of_line, - start_color, end_color, shorten_yc_line); - else - { - horz_line (xr, x0, x1, x2, x3, y1, start_of_line, end_of_line, - start_color, end_color, shorten_y1_lines); - horz_line (xr, x0, x1, x2, x3, y2, start_of_line, end_of_line, - start_color, end_color, shorten_y2_lines); - } - - if (!double_vert) - vert_line (xr, y0, y1, y2, y3, xc, top, bottom, top_color, bottom_color, - shorten_xc_line); - else - { - vert_line (xr, y0, y1, y2, y3, x1, top, bottom, top_color, bottom_color, - shorten_x1_lines); - vert_line (xr, y0, y1, y2, y3, x2, top, bottom, top_color, bottom_color, - shorten_x2_lines); - } -} - -static void -xr_measure_cell_width (void *xr_, const struct table_cell *cell, - int *min_width, int *max_width) -{ - struct xr_driver *xr = xr_; - int bb[TABLE_N_AXES][2]; - int clip[TABLE_N_AXES][2]; - int h; - - bb[H][0] = 0; - bb[H][1] = INT_MAX; - bb[V][0] = 0; - bb[V][1] = INT_MAX; - clip[H][0] = clip[H][1] = clip[V][0] = clip[V][1] = 0; - xr_layout_cell (xr, cell, bb, clip, max_width, &h, NULL); - - bb[H][1] = 1; - xr_layout_cell (xr, cell, bb, clip, min_width, &h, NULL); - - if (*min_width > 0) - *min_width += px_to_xr (cell->style->cell_style.margin[H][0] - + cell->style->cell_style.margin[H][1]); - if (*max_width > 0) - *max_width += px_to_xr (cell->style->cell_style.margin[H][0] - + cell->style->cell_style.margin[H][1]); -} - -static int -xr_measure_cell_height (void *xr_, const struct table_cell *cell, int width) -{ - struct xr_driver *xr = xr_; - int bb[TABLE_N_AXES][2]; - int clip[TABLE_N_AXES][2]; - int w, h; - - bb[H][0] = 0; - bb[H][1] = width - px_to_xr (cell->style->cell_style.margin[H][0] - + cell->style->cell_style.margin[H][1]); - bb[V][0] = 0; - bb[V][1] = INT_MAX; - clip[H][0] = clip[H][1] = clip[V][0] = clip[V][1] = 0; - xr_layout_cell (xr, cell, bb, clip, &w, &h, NULL); - h += px_to_xr (cell->style->cell_style.margin[V][0] - + cell->style->cell_style.margin[V][1]); - return h; -} - -static void xr_clip (struct xr_driver *, int clip[TABLE_N_AXES][2]); - -static void -xr_draw_cell (void *xr_, const struct table_cell *cell, int color_idx, - int bb[TABLE_N_AXES][2], int valign_offset, - int spill[TABLE_N_AXES][2], - int clip[TABLE_N_AXES][2]) -{ - struct xr_driver *xr = xr_; - int w, h, brk; - - if (!xr->transparent) - { - cairo_save (xr->cairo); - int bg_clip[TABLE_N_AXES][2]; - for (int axis = 0; axis < TABLE_N_AXES; axis++) - { - bg_clip[axis][0] = clip[axis][0]; - if (bb[axis][0] == clip[axis][0]) - bg_clip[axis][0] -= spill[axis][0]; - - bg_clip[axis][1] = clip[axis][1]; - if (bb[axis][1] == clip[axis][1]) - bg_clip[axis][1] += spill[axis][1]; - } - xr_clip (xr, bg_clip); - set_source_rgba (xr->cairo, &cell->style->font_style.bg[color_idx]); - fill_rectangle (xr, - bb[H][0] - spill[H][0], - bb[V][0] - spill[V][0], - bb[H][1] + spill[H][1], - bb[V][1] + spill[V][1]); - cairo_restore (xr->cairo); - } - cairo_save (xr->cairo); - if (!xr->systemcolors) - set_source_rgba (xr->cairo, &cell->style->font_style.fg[color_idx]); - - bb[V][0] += valign_offset; - - for (int axis = 0; axis < TABLE_N_AXES; axis++) - { - bb[axis][0] += px_to_xr (cell->style->cell_style.margin[axis][0]); - bb[axis][1] -= px_to_xr (cell->style->cell_style.margin[axis][1]); - } - if (bb[H][0] < bb[H][1] && bb[V][0] < bb[V][1]) - xr_layout_cell (xr, cell, bb, clip, &w, &h, &brk); - cairo_restore (xr->cairo); -} - -static int -xr_adjust_break (void *xr_, const struct table_cell *cell, - int width, int height) -{ - struct xr_driver *xr = xr_; - int bb[TABLE_N_AXES][2]; - int clip[TABLE_N_AXES][2]; - int w, h, brk; - - if (xr_measure_cell_height (xr_, cell, width) < height) - return -1; - - bb[H][0] = 0; - bb[H][1] = width - px_to_xr (cell->style->cell_style.margin[H][0] - + cell->style->cell_style.margin[H][1]); - if (bb[H][1] <= 0) - return 0; - bb[V][0] = 0; - bb[V][1] = height - px_to_xr (cell->style->cell_style.margin[V][0] - + cell->style->cell_style.margin[V][1]); - clip[H][0] = clip[H][1] = clip[V][0] = clip[V][1] = 0; - xr_layout_cell (xr, cell, bb, clip, &w, &h, &brk); - return brk; -} - -static void -xr_clip (struct xr_driver *xr, int clip[TABLE_N_AXES][2]) -{ - if (clip[H][1] != INT_MAX || clip[V][1] != INT_MAX) - { - double x0 = xr_to_pt (clip[H][0]); - double y0 = xr_to_pt (clip[V][0] + xr->y); - double x1 = xr_to_pt (clip[H][1]); - double y1 = xr_to_pt (clip[V][1] + xr->y); - - cairo_rectangle (xr->cairo, x0, y0, x1 - x0, y1 - y0); - cairo_clip (xr->cairo); - } -} - -static void -add_attr (PangoAttrList *list, PangoAttribute *attr, - guint start_index, guint end_index) -{ - attr->start_index = start_index; - attr->end_index = end_index; - pango_attr_list_insert (list, attr); -} - -static void -markup_escape (struct string *out, unsigned int options, - const char *in, size_t len) -{ - if (!(options & TAB_MARKUP)) - { - ds_put_substring (out, ss_buffer (in, len == -1 ? strlen (in) : len)); - return; - } - - while (len-- > 0) - { - int c = *in++; - switch (c) - { - case 0: - return; - case '&': - ds_put_cstr (out, "&"); - break; - case '<': - ds_put_cstr (out, "<"); - break; - case '>': - ds_put_cstr (out, ">"); - break; - default: - ds_put_byte (out, c); - break; - } - } -} - -static int -get_layout_dimension (PangoLayout *layout, enum table_axis axis) -{ - int size[TABLE_N_AXES]; - pango_layout_get_size (layout, &size[H], &size[V]); - return size[axis]; -} - -static int -xr_layout_cell_text (struct xr_driver *xr, const struct table_cell *cell, - int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2], - int *widthp, int *brk) -{ - const struct font_style *font_style = &cell->style->font_style; - const struct cell_style *cell_style = &cell->style->cell_style; - unsigned int options = cell->options; - - enum table_axis X = options & TAB_ROTATE ? V : H; - enum table_axis Y = !X; - int R = options & TAB_ROTATE ? 0 : 1; - - struct xr_font *font = (options & TAB_FIX ? &xr->fonts[XR_FONT_FIXED] - : &xr->fonts[XR_FONT_PROPORTIONAL]); - struct xr_font local_font; - if (font_style->typeface) - { - PangoFontDescription *desc = parse_font ( - font_style->typeface, - font_style->size ? font_style->size * 1000 * xr->font_scale : 10000, - font_style->bold, font_style->italic); - if (desc) - { - PangoLayout *layout = pango_cairo_create_layout (xr->cairo); - pango_layout_set_font_description (layout, desc); - - local_font.desc = desc; - local_font.layout = layout; - font = &local_font; - } - } - - const char *text = cell->text; - enum table_halign halign = table_halign_interpret ( - cell_style->halign, cell->options & TAB_NUMERIC); - if (cell_style->halign == TABLE_HALIGN_DECIMAL && !(options & TAB_ROTATE)) - { - int margin_adjustment = -px_to_xr (cell_style->decimal_offset); - - const char *decimal = strrchr (text, cell_style->decimal_char); - if (decimal) - { - pango_layout_set_text (font->layout, decimal, strlen (decimal)); - pango_layout_set_width (font->layout, -1); - margin_adjustment += get_layout_dimension (font->layout, H); - } - - if (margin_adjustment < 0) - bb[H][1] += margin_adjustment; - } - - struct string tmp = DS_EMPTY_INITIALIZER; - PangoAttrList *attrs = NULL; - - /* Deal with an oddity of the Unicode line-breaking algorithm (or perhaps in - Pango's implementation of it): it will break after a period or a comma - that precedes a digit, e.g. in ".000" it will break after the period. - This code looks for such a situation and inserts a U+2060 WORD JOINER - to prevent the break. - - This isn't necessary when the decimal point is between two digits - (e.g. "0.000" won't be broken) or when the display width is not limited so - that word wrapping won't happen. - - It isn't necessary to look for more than one period or comma, as would - happen with grouping like 1,234,567.89 or 1.234.567,89 because if groups - are present then there will always be a digit on both sides of every - period and comma. */ - if (options & TAB_MARKUP) - { - PangoAttrList *new_attrs; - char *new_text; - if (pango_parse_markup (text, -1, 0, &new_attrs, &new_text, NULL, NULL)) - { - attrs = new_attrs; - tmp.ss = ss_cstr (new_text); - tmp.capacity = tmp.ss.length; - } - else - { - /* XXX should we report the error? */ - ds_put_cstr (&tmp, text); - } - } - else if (options & TAB_ROTATE || bb[H][1] != INT_MAX) - { - const char *decimal = text + strcspn (text, ".,"); - if (decimal[0] - && c_isdigit (decimal[1]) - && (decimal == text || !c_isdigit (decimal[-1]))) - { - ds_extend (&tmp, strlen (text) + 16); - markup_escape (&tmp, options, text, decimal - text + 1); - ds_put_unichar (&tmp, 0x2060 /* U+2060 WORD JOINER */); - markup_escape (&tmp, options, decimal + 1, -1); - } - } - - if (font_style->underline) - { - if (!attrs) - attrs = pango_attr_list_new (); - pango_attr_list_insert (attrs, pango_attr_underline_new ( - PANGO_UNDERLINE_SINGLE)); - } - - if (cell->n_footnotes || cell->n_subscripts || cell->superscript) - { - /* If we haven't already put TEXT into tmp, do it now. */ - if (ds_is_empty (&tmp)) - { - ds_extend (&tmp, strlen (text) + 16); - markup_escape (&tmp, options, text, -1); - } - - size_t subscript_ofs = ds_length (&tmp); - for (size_t i = 0; i < cell->n_subscripts; i++) - { - if (i) - ds_put_byte (&tmp, ','); - ds_put_cstr (&tmp, cell->subscripts[i]); - } - - size_t superscript_ofs = ds_length (&tmp); - if (cell->superscript) - ds_put_cstr (&tmp, cell->superscript); - - size_t footnote_ofs = ds_length (&tmp); - for (size_t i = 0; i < cell->n_footnotes; i++) - { - if (i) - ds_put_byte (&tmp, ','); - ds_put_cstr (&tmp, cell->footnotes[i]->marker); - } - - /* Allow footnote markers to occupy the right margin. That way, numbers - in the column are still aligned. */ - if (cell->n_footnotes && halign == TABLE_HALIGN_RIGHT) - { - /* Measure the width of the footnote marker, so we know how much we - need to make room for. */ - pango_layout_set_text (font->layout, ds_cstr (&tmp) + footnote_ofs, - ds_length (&tmp) - footnote_ofs); - - PangoAttrList *fn_attrs = pango_attr_list_new (); - pango_attr_list_insert ( - fn_attrs, pango_attr_scale_new (PANGO_SCALE_SMALL)); - pango_attr_list_insert (fn_attrs, pango_attr_rise_new (3000)); - pango_layout_set_attributes (font->layout, fn_attrs); - pango_attr_list_unref (fn_attrs); - int footnote_width = get_layout_dimension (font->layout, X); - - /* Bound the adjustment by the width of the right margin. */ - int right_margin = px_to_xr (cell_style->margin[X][R]); - int footnote_adjustment = MIN (footnote_width, right_margin); - - /* Adjust the bounding box. */ - if (options & TAB_ROTATE) - footnote_adjustment = -footnote_adjustment; - bb[X][R] += footnote_adjustment; - - /* Clean up. */ - pango_layout_set_attributes (font->layout, NULL); - } - - /* Set attributes. */ - if (!attrs) - attrs = pango_attr_list_new (); - add_attr (attrs, pango_attr_font_desc_new (font->desc), subscript_ofs, - PANGO_ATTR_INDEX_TO_TEXT_END); - add_attr (attrs, pango_attr_scale_new (PANGO_SCALE_SMALL), - subscript_ofs, PANGO_ATTR_INDEX_TO_TEXT_END); - if (cell->n_subscripts) - add_attr (attrs, pango_attr_rise_new (-3000), subscript_ofs, - superscript_ofs - subscript_ofs); - if (cell->superscript || cell->n_footnotes) - add_attr (attrs, pango_attr_rise_new (3000), superscript_ofs, - PANGO_ATTR_INDEX_TO_TEXT_END); - } - - /* Set the attributes, if any. */ - if (attrs) - { - pango_layout_set_attributes (font->layout, attrs); - pango_attr_list_unref (attrs); - } - - /* Set the text. */ - if (ds_is_empty (&tmp)) - pango_layout_set_text (font->layout, text, -1); - else - pango_layout_set_text (font->layout, ds_cstr (&tmp), ds_length (&tmp)); - ds_destroy (&tmp); - - pango_layout_set_alignment (font->layout, - (halign == TABLE_HALIGN_RIGHT ? PANGO_ALIGN_RIGHT - : halign == TABLE_HALIGN_LEFT ? PANGO_ALIGN_LEFT - : PANGO_ALIGN_CENTER)); - pango_layout_set_width ( - font->layout, - bb[X][1] == INT_MAX ? -1 : xr_to_pango (bb[X][1] - bb[X][0])); - pango_layout_set_wrap (font->layout, PANGO_WRAP_WORD); - - if (clip[H][0] != clip[H][1]) + if (xr->fsm != NULL) { cairo_save (xr->cairo); - if (!(options & TAB_ROTATE)) - xr_clip (xr, clip); - if (options & TAB_ROTATE) - { - cairo_translate (xr->cairo, - xr_to_pt (bb[H][0]), - xr_to_pt (bb[V][1] + xr->y)); - cairo_rotate (xr->cairo, -M_PI_2); - } - else - cairo_translate (xr->cairo, - xr_to_pt (bb[H][0]), - xr_to_pt (bb[V][0] + xr->y)); - pango_cairo_show_layout (xr->cairo, font->layout); - - /* If enabled, this draws a blue rectangle around the extents of each - line of text, which can be rather useful for debugging layout - issues. */ - if (0) - { - PangoLayoutIter *iter; - iter = pango_layout_get_iter (font->layout); - do - { - PangoRectangle extents; - - pango_layout_iter_get_line_extents (iter, &extents, NULL); - cairo_save (xr->cairo); - cairo_set_source_rgb (xr->cairo, 1, 0, 0); - dump_rectangle (xr, - pango_to_xr (extents.x), - pango_to_xr (extents.y) - xr->y, - pango_to_xr (extents.x + extents.width), - pango_to_xr (extents.y + extents.height) - xr->y); - cairo_restore (xr->cairo); - } - while (pango_layout_iter_next_line (iter)); - pango_layout_iter_free (iter); - } - + cairo_translate (xr->cairo, 0, xr_to_pt (xr->y)); + int used = xr_fsm_draw_slice (xr->fsm, xr->cairo, xr->length - xr->y); + xr->y += used; cairo_restore (xr->cairo); - } - - int size[TABLE_N_AXES]; - pango_layout_get_size (font->layout, &size[H], &size[V]); - int w = pango_to_xr (size[X]); - int h = pango_to_xr (size[Y]); - if (w > *widthp) - *widthp = w; - if (bb[V][0] + h >= bb[V][1] && !(options & TAB_ROTATE)) - { - PangoLayoutIter *iter; - int best = 0; - - /* Choose a breakpoint between lines instead of in the middle of one. */ - iter = pango_layout_get_iter (font->layout); - do - { - PangoRectangle extents; - int y0, y1; - int bottom; - - pango_layout_iter_get_line_extents (iter, NULL, &extents); - pango_layout_iter_get_line_yrange (iter, &y0, &y1); - extents.x = pango_to_xr (extents.x); - extents.y = pango_to_xr (y0); - extents.width = pango_to_xr (extents.width); - extents.height = pango_to_xr (y1 - y0); - bottom = bb[V][0] + extents.y + extents.height; - if (bottom < bb[V][1]) - { - if (brk && clip[H][0] != clip[H][1]) - best = bottom; - if (brk) - *brk = bottom; - } - else - break; - } - while (pango_layout_iter_next_line (iter)); - pango_layout_iter_free (iter); - - /* If enabled, draws a green line across the chosen breakpoint, which can - be useful for debugging issues with breaking. */ - if (0) - { - if (best) - dump_line (xr, -xr->left_margin, best, - xr->width + xr->right_margin, best, - RENDER_LINE_SINGLE, - &(struct cell_color) CELL_COLOR (0, 255, 0)); - } - } - - pango_layout_set_attributes (font->layout, NULL); - - if (font == &local_font) - { - g_object_unref (G_OBJECT (font->layout)); - pango_font_description_free (font->desc); - } - - return h; -} - -static void -xr_layout_cell (struct xr_driver *xr, const struct table_cell *cell, - int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2], - int *width, int *height, int *brk) -{ - *width = 0; - *height = 0; - /* If enabled, draws a blue rectangle around the cell extents, which can be - useful for debugging layout. */ - if (0) - { - if (clip[H][0] != clip[H][1]) - { - cairo_save (xr->cairo); - cairo_set_source_rgb (xr->cairo, 0, 0, 1); - dump_rectangle (xr, bb[H][0], bb[V][0], bb[H][1], bb[V][1]); - cairo_restore (xr->cairo); - } + if (xr_fsm_is_empty (xr->fsm)) + xr_driver_destroy_fsm (xr); } - - if (brk) - *brk = bb[V][0]; - *height = xr_layout_cell_text (xr, cell, bb, clip, width, brk); } struct output_driver_factory pdf_driver_factory = @@ -1566,22 +759,6 @@ static const struct output_driver_class cairo_driver_class = xr_flush, }; -/* GUI rendering helpers. */ - -struct xr_rendering - { - struct output_item *item; - - /* Table items. */ - struct render_pager *p; - struct xr_driver *xr; - }; - -#define CHART_WIDTH 500 -#define CHART_HEIGHT 375 - - - struct xr_driver * xr_driver_create (cairo_t *cairo, struct string_map *options) { @@ -1601,111 +778,6 @@ xr_driver_destroy (struct xr_driver *xr) output_driver_destroy (&xr->driver); } } - -static struct xr_rendering * -xr_rendering_create_text (struct xr_driver *xr, const char *text, cairo_t *cr) -{ - struct table_item *table_item; - struct xr_rendering *r; - - table_item = table_item_create (table_from_string (text), NULL, NULL); - r = xr_rendering_create (xr, &table_item->output_item, cr); - table_item_unref (table_item); - - return r; -} - -struct xr_rendering * -xr_rendering_create (struct xr_driver *xr, const struct output_item *item, - cairo_t *cr) -{ - struct xr_rendering *r = NULL; - - if (is_text_item (item)) - r = xr_rendering_create_text (xr, text_item_get_text (to_text_item (item)), - cr); - else if (is_message_item (item)) - { - const struct message_item *message_item = to_message_item (item); - char *s = msg_to_string (message_item_get_msg (message_item)); - r = xr_rendering_create_text (xr, s, cr); - free (s); - } - else if (is_table_item (item)) - { - r = xzalloc (sizeof *r); - r->item = output_item_ref (item); - r->xr = xr; - xr_set_cairo (xr, cr); - r->p = render_pager_create (xr->params, to_table_item (item)); - } - else if (is_chart_item (item)) - { - r = xzalloc (sizeof *r); - r->item = output_item_ref (item); - } - else if (is_group_open_item (item)) - r = xr_rendering_create_text (xr, to_group_open_item (item)->command_name, - cr); - - return r; -} - -void -xr_rendering_destroy (struct xr_rendering *r) -{ - if (r) - { - output_item_unref (r->item); - render_pager_destroy (r->p); - free (r); - } -} - -void -xr_rendering_measure (const struct xr_rendering *r, int *wp, int *hp) -{ - int w, h; - - if (is_table_item (r->item)) - { - w = render_pager_get_size (r->p, H) / XR_POINT; - h = render_pager_get_size (r->p, V) / XR_POINT; - } - else - { - w = CHART_WIDTH; - h = CHART_HEIGHT; - } - - if (wp) - *wp = w; - if (hp) - *hp = h; -} - -static void xr_draw_chart (const struct chart_item *, cairo_t *, - double x, double y, double width, double height); - -/* Draws onto CR */ -void -xr_rendering_draw (struct xr_rendering *r, cairo_t *cr, - int x0, int y0, int x1, int y1) -{ - if (is_table_item (r->item)) - { - struct xr_driver *xr = r->xr; - - xr_set_cairo (xr, cr); - - render_pager_draw_region (r->p, x0 * XR_POINT, y0 * XR_POINT, - (x1 - x0) * XR_POINT, (y1 - y0) * XR_POINT); - } - else - xr_draw_chart (to_chart_item (r->item), cr, - 0, 0, CHART_WIDTH, CHART_HEIGHT); -} - static void xr_draw_chart (const struct chart_item *chart_item, cairo_t *cr, double x, double y, double width, double height) @@ -1823,202 +895,3 @@ xr_draw_eps_chart (const struct chart_item *item, return file_name; } - - -struct xr_table_state - { - struct xr_render_fsm fsm; - struct render_pager *p; - }; - -static bool -xr_table_render (struct xr_render_fsm *fsm, struct xr_driver *xr) -{ - struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm); - - while (render_pager_has_next (ts->p)) - { - int used; - - used = render_pager_draw_next (ts->p, xr->length - xr->y); - if (!used) - { - assert (xr->y > 0); - return true; - } - else - xr->y += used; - } - return false; -} - -static void -xr_table_destroy (struct xr_render_fsm *fsm) -{ - struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm); - - render_pager_destroy (ts->p); - free (ts); -} - -static struct xr_render_fsm * -xr_render_table (struct xr_driver *xr, struct table_item *table_item) -{ - struct xr_table_state *ts; - - ts = xmalloc (sizeof *ts); - ts->fsm.render = xr_table_render; - ts->fsm.destroy = xr_table_destroy; - - if (xr->y > 0) - xr->y += xr->char_height; - - ts->p = render_pager_create (xr->params, table_item); - table_item_unref (table_item); - - return &ts->fsm; -} - -struct xr_chart_state - { - struct xr_render_fsm fsm; - struct chart_item *chart_item; - }; - -static bool -xr_chart_render (struct xr_render_fsm *fsm, struct xr_driver *xr) -{ - struct xr_chart_state *cs = UP_CAST (fsm, struct xr_chart_state, fsm); - - const int chart_height = 0.8 * (xr->length < xr->width ? xr->length : xr->width); - - if (xr->y > xr->length - chart_height) - return true; - - if (xr->cairo != NULL) - { - xr_draw_chart (cs->chart_item, xr->cairo, - 0.0, - xr_to_pt (xr->y), - xr_to_pt (xr->width), - xr_to_pt (chart_height)); - } - xr->y += chart_height; - - return false; -} - -static void -xr_chart_destroy (struct xr_render_fsm *fsm) -{ - struct xr_chart_state *cs = UP_CAST (fsm, struct xr_chart_state, fsm); - - chart_item_unref (cs->chart_item); - free (cs); -} - -static struct xr_render_fsm * -xr_render_chart (const struct chart_item *chart_item) -{ - struct xr_chart_state *cs; - - cs = xmalloc (sizeof *cs); - cs->fsm.render = xr_chart_render; - cs->fsm.destroy = xr_chart_destroy; - cs->chart_item = chart_item_ref (chart_item); - - return &cs->fsm; -} - -static bool -xr_eject_render (struct xr_render_fsm *fsm UNUSED, struct xr_driver *xr) -{ - return xr->y > 0; -} - -static void -xr_eject_destroy (struct xr_render_fsm *fsm UNUSED) -{ - /* Nothing to do. */ -} - -static struct xr_render_fsm * -xr_render_eject (void) -{ - static struct xr_render_fsm eject_renderer = - { - xr_eject_render, - xr_eject_destroy - }; - - return &eject_renderer; -} - -static struct xr_render_fsm * -xr_render_text (struct xr_driver *xr, const struct text_item *text_item) -{ - enum text_item_type type = text_item_get_type (text_item); - - switch (type) - { - case TEXT_ITEM_PAGE_TITLE: - break; - - case TEXT_ITEM_EJECT_PAGE: - if (xr->y > 0) - return xr_render_eject (); - break; - - default: - return xr_render_table ( - xr, text_item_to_table_item (text_item_ref (text_item))); - } - - return NULL; -} - -static struct xr_render_fsm * -xr_render_message (struct xr_driver *xr, - const struct message_item *message_item) -{ - char *s = msg_to_string (message_item_get_msg (message_item)); - struct text_item *item = text_item_create (TEXT_ITEM_LOG, s); - free (s); - return xr_render_table (xr, text_item_to_table_item (item)); -} - -static struct xr_render_fsm * -xr_render_output_item (struct xr_driver *xr, - const struct output_item *output_item) -{ - if (is_table_item (output_item)) - return xr_render_table (xr, table_item_ref (to_table_item (output_item))); - else if (is_chart_item (output_item)) - return xr_render_chart (to_chart_item (output_item)); - else if (is_text_item (output_item)) - return xr_render_text (xr, to_text_item (output_item)); - else if (is_message_item (output_item)) - return xr_render_message (xr, to_message_item (output_item)); - else - return NULL; -} - -bool -xr_draw_svg_file (struct xr_rendering *r, - const char *filename) -{ - int width, height; - g_assert (r); - xr_rendering_measure (r, &width, &height); - cairo_surface_t *surface = cairo_svg_surface_create (filename, width, height); - if (!surface) - { - g_error ("Could not create cairo svg surface with file %s", filename); - return FALSE; - } - cairo_t *cr = cairo_create (surface); - xr_rendering_draw (r, cr, 0, 0, width, height); - cairo_destroy (cr); - cairo_surface_destroy (surface); - return TRUE; -}