cell.c 19.5 KB
Newer Older
1 2 3 4 5 6 7
/*
 * cell.c: Cell management of the Gnumeric spreadsheet.
 *
 * Author:
 *    Miguel de Icaza (miguel@kernel.org)
 *
 */
8
#include <config.h>
Arturo Espinosa's avatar
Arturo Espinosa committed
9
#include <gnome.h>
Arturo Espinosa's avatar
Arturo Espinosa committed
10
#include "gnumeric.h"
Arturo Espinosa's avatar
Arturo Espinosa committed
11
#include "gnumeric-sheet.h"
Arturo Espinosa's avatar
Arturo Espinosa committed
12
#include "eval.h"
13
#include "format.h"
Arturo Espinosa's avatar
Arturo Espinosa committed
14

15 16 17 18 19 20 21 22 23
void
cell_formula_changed (Cell *cell)
{
	g_return_if_fail (cell != NULL);
	
	sheet_cell_formula_link (cell);
	cell_queue_recalc (cell);
}

Arturo Espinosa's avatar
Arturo Espinosa committed
24 25 26 27
void
cell_set_formula (Cell *cell, char *text)
{
	char *error_msg = NULL;
Arturo Espinosa's avatar
Arturo Espinosa committed
28

Arturo Espinosa's avatar
Arturo Espinosa committed
29 30
	g_return_if_fail (cell != NULL);
	g_return_if_fail (text != NULL);
31

Arturo Espinosa's avatar
Arturo Espinosa committed
32 33 34 35 36 37 38 39 40 41
	cell->parsed_node = expr_parse_string (&text [1],
					       cell->col->pos,
					       cell->row->pos,
					       &error_msg);
	if (cell->parsed_node == NULL){
		if (cell->text)
			string_unref_ptr (&cell->text);
		cell->text = string_get (error_msg);
		return;
	}
42
	cell_formula_changed (cell);
Arturo Espinosa's avatar
Arturo Espinosa committed
43
}
Arturo Espinosa's avatar
Arturo Espinosa committed
44

Miguel de Icaza's avatar
Miguel de Icaza committed
45 46 47 48 49 50 51 52 53 54 55
/*
 * cell_set_alignment:
 *
 * @cell: the cell to change the alignment of
 * @halign: the horizontal alignemnt
 * @valign: the vertical alignemnt
 * @orient: the text orientation
 *
 * This routine changes the alignment of a cell to those specified.
 */
void
Arturo Espinosa's avatar
Arturo Espinosa committed
56
cell_set_alignment (Cell *cell, int halign, int valign, int orient, int auto_return)
Miguel de Icaza's avatar
Miguel de Icaza committed
57 58 59 60 61 62 63 64 65 66 67 68
{
	g_return_if_fail (cell != NULL);
	g_return_if_fail (cell->style != NULL);

	if ((cell->style->halign == halign) &&
	    (cell->style->halign == valign) &&
	    (cell->style->orientation == orient))
		return;

	cell->style->halign = halign;
	cell->style->valign = valign;
	cell->style->orientation = orient;
Arturo Espinosa's avatar
Arturo Espinosa committed
69 70 71 72
	cell->style->fit_in_cell = auto_return;
	
	cell_calc_dimensions (cell);
	
Miguel de Icaza's avatar
Miguel de Icaza committed
73 74 75
	cell_queue_redraw (cell);
}

76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
void
cell_set_font_from_style (Cell *cell, StyleFont *style_font)
{
	GdkFont *font;
	
	g_return_if_fail (cell != NULL);
	g_return_if_fail (style_font != NULL);

	style_font_unref (cell->style->font);
	style_font_ref (style_font);
	
	cell->style->font = style_font;

	font = style_font->font;
	
Arturo Espinosa's avatar
Arturo Espinosa committed
91
	cell_calc_dimensions (cell);
92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109
	
	cell_queue_redraw (cell);
}

void
cell_set_font (Cell *cell, char *font_name)
{
	StyleFont *style_font;

	g_return_if_fail (cell != NULL);
	g_return_if_fail (font_name != NULL);

	style_font = style_font_new (font_name, 1);

	if (style_font)
		cell_set_font_from_style (cell, style_font);
}

Miguel de Icaza's avatar
Miguel de Icaza committed
110 111 112 113 114 115 116 117
/*
 * cell_set_rendered_text
 * @cell:          the cell we will modify
 * @rendered_text: the text we will display
 *
 * This routine sets the rendered text field of the cell
 * it recomputes the bounding box for the cell as well
 */
Miguel de Icaza's avatar
Today:  
Miguel de Icaza committed
118 119 120 121 122 123 124 125 126 127 128 129 130
void
cell_set_rendered_text (Cell *cell, char *rendered_text)
{
	g_return_if_fail (cell != NULL);
	g_return_if_fail (rendered_text != NULL);
	
	if (cell->text)
		string_unref (cell->text);

	cell->text = string_get (rendered_text);
	cell_calc_dimensions (cell);
}

Miguel de Icaza's avatar
Miguel de Icaza committed
131 132 133 134 135 136
/*
 * cell_render_value
 * @cell: The cell whose value needs to be rendered
 *
 * The value of the cell is formated according to the format style
 */
Miguel de Icaza's avatar
Today:  
Miguel de Icaza committed
137 138 139 140 141 142 143 144
void
cell_render_value (Cell *cell)
{
	char *str;
	
	g_return_if_fail (cell != NULL);
	g_return_if_fail (cell->value != NULL);

145
	str = format_value (cell->style->format, cell->value, NULL);
Miguel de Icaza's avatar
Today:  
Miguel de Icaza committed
146 147 148 149
	cell_set_rendered_text (cell, str);
	g_free (str);
}

150 151 152
void
cell_set_text (Cell *cell, char *text)
{
Arturo Espinosa's avatar
Arturo Espinosa committed
153 154 155 156
	GList   *deps;
	
	g_return_if_fail (cell != NULL);
	g_return_if_fail (text != NULL);
Arturo Espinosa's avatar
Arturo Espinosa committed
157

Arturo Espinosa's avatar
Arturo Espinosa committed
158 159
	/* The value entered */
	if (cell->entered_text)
160 161
		string_unref (cell->entered_text);

Arturo Espinosa's avatar
Arturo Espinosa committed
162 163 164
	cell->entered_text = string_get (text);
	
	if (cell->parsed_node){
165
		sheet_cell_formula_unlink (cell);
166

Arturo Espinosa's avatar
Arturo Espinosa committed
167
		expr_tree_unref (cell->parsed_node);
168
		cell->parsed_node = NULL;
Arturo Espinosa's avatar
Arturo Espinosa committed
169
	}
Arturo Espinosa's avatar
Arturo Espinosa committed
170
	
Miguel de Icaza's avatar
Miguel de Icaza committed
171
 	if (text [0] == '='){
Arturo Espinosa's avatar
Arturo Espinosa committed
172 173 174 175 176 177 178 179 180 181 182
		cell_set_formula (cell, text); 
	} else {
		Value *v = g_new (Value, 1);
		int is_text = 0, is_float = 0;
		char *p;
		
		for (p = text; *p && !is_text; p++){
			switch (*p){
			case '0': case '1': case '2': case '3': case '4':
			case '5': case '6': case '7': case '8': case '9':
				break;
183 184 185 186 187

			case '-':
				if (p == text)
					break;
				/* falldown */
Arturo Espinosa's avatar
Arturo Espinosa committed
188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210
				
			case 'E': case 'e': case '+': case ':': case '.':
				is_float = 1;
				break;
			default:
				is_text = 1;
			}
		}
		if (is_text){
			v->type = VALUE_STRING;
			v->v.str = string_get (text);
		} else {
			if (is_float){
				v->type = VALUE_FLOAT;
				float_get_from_range (text, text+strlen(text),
						      &v->v.v_float);
			} else {
				v->type = VALUE_INTEGER;
				int_get_from_range (text, text+strlen (text),
						    &v->v.v_int);
			}
		}
		cell->value = v;
Miguel de Icaza's avatar
Today:  
Miguel de Icaza committed
211 212
		
		cell_render_value (cell);
Arturo Espinosa's avatar
Arturo Espinosa committed
213
	}
Arturo Espinosa's avatar
Arturo Espinosa committed
214

Arturo Espinosa's avatar
Arturo Espinosa committed
215 216 217 218 219 220
	/* Queue all of the dependencies for this cell */
	deps = cell_get_dependencies (cell->sheet,
				      cell->col->pos,
				      cell->row->pos);
	if (deps)
		cell_queue_recalc_list (deps);
Arturo Espinosa's avatar
Today:  
Arturo Espinosa committed
221 222

	cell_queue_redraw (cell);
Arturo Espinosa's avatar
Arturo Espinosa committed
223
}
Arturo Espinosa's avatar
Arturo Espinosa committed
224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241

/*
 * Makes a copy of a Cell
 */
Cell *
cell_copy (Cell *cell)
{
	Cell *new_cell;

	g_return_val_if_fail (cell != NULL, NULL);

	new_cell = g_new (Cell, 1);

	/* bitmap copy first */
	*new_cell = *cell;

	/* now copy propertly the rest */
	string_ref      (new_cell->entered_text);
242 243
	if (new_cell->parsed_node)
		expr_tree_ref   (new_cell->parsed_node);
Arturo Espinosa's avatar
Arturo Espinosa committed
244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265
	string_ref      (new_cell->text);
	
	new_cell->style = style_duplicate (new_cell->style);
	new_cell->value = value_duplicate (new_cell->value);

	return new_cell;
}

void
cell_destroy (Cell *cell)
{
	g_return_if_fail (cell != NULL);

	if (cell->parsed_node){
		expr_tree_unref (cell->parsed_node);
	}

	string_unref    (cell->entered_text);
	string_unref    (cell->text);
	style_destroy   (cell->style);
	value_release   (cell->value);
}
Miguel de Icaza's avatar
Today:  
Miguel de Icaza committed
266 267 268 269

void
cell_queue_redraw (Cell *cell)
{
270 271
	g_return_if_fail (cell != NULL);
	
Miguel de Icaza's avatar
Today:  
Miguel de Icaza committed
272 273 274 275 276 277 278 279
	sheet_redraw_cell_region (cell->sheet,
				  cell->col->pos, cell->row->pos,
				  cell->col->pos, cell->row->pos);
}

void
cell_set_format (Cell *cell, char *format)
{
280 281 282
	g_return_if_fail (cell != NULL);
	g_return_if_fail (format != NULL);
	
Miguel de Icaza's avatar
Today:  
Miguel de Icaza committed
283 284 285 286 287 288 289 290 291
	if (strcmp (format, cell->style->format->format) == 0)
		return;

	/* Change the format */
	style_format_unref (cell->style->format);
	cell->style->format = style_format_new (format);

	/* re-render the cell text */
	cell_render_value (cell);
292
	cell_queue_redraw (cell);
Miguel de Icaza's avatar
Today:  
Miguel de Icaza committed
293
}
294

Arturo Espinosa's avatar
Arturo Espinosa committed
295 296 297 298 299 300 301 302 303 304 305 306 307 308 309
void
cell_formula_relocate (Cell *cell, int target_col, int target_row)
{
	char *text, *formula;
	
	g_return_if_fail (cell != NULL);
	g_return_if_fail (cell->entered_text);
	
	string_unref (cell->entered_text);
	
	text = expr_decode_tree (cell->parsed_node, target_col, target_row);
	
	formula = g_copy_strings ("=", text, NULL);
	cell->entered_text = string_get (formula);

Arturo Espinosa's avatar
Today:  
Arturo Espinosa committed
310 311
	cell_set_formula (cell, formula);
	
Arturo Espinosa's avatar
Arturo Espinosa committed
312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331
	g_free (formula);
	g_free (text);
	
	cell_formula_changed (cell);
}

/*
 * This routine drops the formula and just keeps the value
 */
void
cell_make_value (Cell *cell)
{
	g_return_if_fail (cell != NULL);
	g_return_if_fail (cell->parsed_node != NULL);

	expr_tree_unref (cell->parsed_node);
	cell->parsed_node = NULL;
	string_unref (cell->entered_text);
	cell->entered_text = string_ref (cell->text);
}
332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386

int
cell_get_horizontal_align (Cell *cell)
{
	g_return_val_if_fail (cell != NULL, HALIGN_LEFT);

	if (cell->style->halign == HALIGN_GENERAL)
		if (cell->value){
			if (cell->value->type== VALUE_FLOAT ||
			    cell->value->type == VALUE_INTEGER)
				return HALIGN_RIGHT;
			else
				return HALIGN_LEFT;
		} else
			return HALIGN_RIGHT;
	else
		return cell->style->halign;
}

static inline int
cell_is_number (Cell *cell)
{
	if (cell->value)
		if (cell->value->type == VALUE_FLOAT || cell->value->type == VALUE_INTEGER)
			return TRUE;

	return FALSE;
}

static inline int
cell_contents_fit_inside_column (Cell *cell)
{
	if (cell->width < COL_INTERNAL_WIDTH (cell->col))
		return TRUE;
	else
		return FALSE;
}

/*
 * cell_get_span:
 * @cell:   The cell we will examine
 * @col1:   return value: the first column used by this cell
 * @col2:   return value: the last column used by this cell
 *
 * This routine returns the column interval used by a Cell.
 */
void
cell_get_span (Cell *cell, int *col1, int *col2)
{
	Sheet *sheet;
	int align, left;
	int row, pos, margin;
	
	g_return_if_fail (cell != NULL);

387 388 389 390
        /*
	 * If the cell is a number, or the text fits inside the column, or the
	 * alignment modes are set to "justify", then we report only one
	 * column is used.
391 392
	 */
	if (cell_is_number (cell) ||
393 394
	    cell->style->fit_in_cell ||
	    cell->style->valign == VALIGN_JUSTIFY ||
395
	    cell->style->halign == HALIGN_JUSTIFY ||
Arturo Espinosa's avatar
Arturo Espinosa committed
396
	    cell->style->halign == HALIGN_FILL    ||
397 398 399 400 401 402 403 404 405
	    cell_contents_fit_inside_column (cell)){
		*col1 = *col2 = cell->col->pos;
		return;
	}

	sheet = cell->sheet;
	align = cell_get_horizontal_align (cell);
	row   = cell->row->pos;

Arturo Espinosa's avatar
Arturo Espinosa committed
406
	switch (align){
407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478
	case HALIGN_LEFT:
		*col1 = *col2 = cell->col->pos;
		pos = cell->col->pos + 1;
		left = cell->width - COL_INTERNAL_WIDTH (cell->col);
		margin = cell->col->margin_b;
		
		for (; left > 0 && pos < SHEET_MAX_COLS-1; pos++){
			ColRowInfo *ci;
			Cell *sibling;

			sibling = sheet_cell_get (sheet, pos, row);

			if (sibling)
				return;

			ci = sheet_col_get_info (sheet, pos);
			
			/* The space consumed is:
			 *    - The margin_b from the last column
			 *    - The width of the cell
			 */
			left -= COL_INTERNAL_WIDTH (ci) +
				margin + ci->margin_a;
			margin = ci->margin_b;
			(*col2)++;
		}
		return;
		
	case HALIGN_RIGHT:
		*col1 = *col2 = cell->col->pos;
		pos = cell->col->pos - 1;
		left = cell->width - COL_INTERNAL_WIDTH (cell->col);
		margin = cell->col->margin_a;
		
		for (; left > 0 && pos >= 0; pos--){
			ColRowInfo *ci;
			Cell *sibling;

			sibling = sheet_cell_get (sheet, pos, row);

			if (sibling)
				return;

			ci = sheet_col_get_info (sheet, pos);

			/* The space consumed is:
			 *   - The margin_a from the last column
			 *   - The widht of this cell
			 */
			left -= COL_INTERNAL_WIDTH (ci) +
				margin + ci->margin_b;
			margin = ci->margin_a;
			(*col1)--;
		}
		return;

	case HALIGN_CENTER: {
		int left_left, left_right;
		int margin_a, margin_b;
		
		*col1 = *col2 = cell->col->pos;
		left = cell->width -  COL_INTERNAL_WIDTH (cell->col);
		
		left_left  = left / 2 + (left % 2);
		left_right = left / 2;
		margin_a = cell->col->margin_a;
		margin_b = cell->col->margin_b;
		
		for (; left_left > 0 || left_right > 0;){
			ColRowInfo *ci;
			Cell *left_sibling, *right_sibling;

Arturo Espinosa's avatar
Arturo Espinosa committed
479
			if (*col1 - 1 >= 0){
480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511
				left_sibling = sheet_cell_get (sheet, *col1 - 1, row);

				if (left_sibling)
					left_left = 0;
				else {
					ci = sheet_col_get_info (sheet, *col1 - 1);

					left_left -= COL_INTERNAL_WIDTH (ci) +
						margin_a + ci->margin_b;
					margin_a = ci->margin_a;
					(*col1)--;
				}
			} else
				left_left = 0;

			if (*col2 + 1 < SHEET_MAX_COLS-1){
				right_sibling = sheet_cell_get (sheet, *col2 + 1, row);

				if (right_sibling)
					left_right = 0;
				else {
					ci = sheet_col_get_info (sheet, *col2 + 1);

					left_right -= COL_INTERNAL_WIDTH (ci) +
						margin_b + ci->margin_a;
					margin_b = ci->margin_b;
					(*col2)++;
				}
			} else
				left_right = 0;
			
		} /* for */
Arturo Espinosa's avatar
Arturo Espinosa committed
512 513 514 515 516
		break;
		
	default:
		g_warning ("Unknown horizontal alignment type\n");
		*col1 = *col2 = cell->col->pos;
517 518 519 520 521
	} /* case HALIGN_CENTER */
			
	} /* switch */
}

522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576
/*
 * calc_text_dimensions
 * @is_number: whether we are computing the size for a number.
 * @style:     the style formatting constraints (font, alignments)
 * @text:      the string contents.
 * @cell_w:    the cell width
 * @cell_h:    the cell height
 * @h:         return value: the height used
 * @w:         return value: the width used.
 *
 * Computes the width and height used by the cell based on alignments
 * constraints in the style using the font specified on the style. 
 */
void
calc_text_dimensions (int is_number, Style *style, char *text, int cell_w, int cell_h, int *h, int *w)
{
	GdkFont *font = style->font->font;
	int text_width, font_height;
	
	text_width = gdk_string_width (font, text);
	font_height = font->ascent + font->descent;
	
	if (text_width < cell_w || is_number){
		*w = text_width;
		*h = font_height;
		return;
	} 

	if (style->halign == HALIGN_JUSTIFY ||
	    style->valign == VALIGN_JUSTIFY ||
	    style->fit_in_cell){
		char *ideal_cut_spot = NULL;
		int  used, last_was_cut_point;
		char *p = text;
		*w = cell_w;
		*h = font_height;
		
		used = 0;
		last_was_cut_point = FALSE;

		for (; *p; p++){
			int len;

			if (last_was_cut_point && *p != ' ')
				ideal_cut_spot = p;
			
			len = gdk_text_width (font, p, 1);

			/* If we have overflowed the cell, wrap */
			if (used + len > cell_w){
				if (ideal_cut_spot){
					int n = p - ideal_cut_spot;
					
					used = gdk_text_width (font, ideal_cut_spot, n);
				} else {
Arturo Espinosa's avatar
Arturo Espinosa committed
577
					used = len;
578
				}
Arturo Espinosa's avatar
Arturo Espinosa committed
579 580
				printf ("Anadiendo %d pixeles\n", font_height);
				*h += font_height;
581
				ideal_cut_spot = NULL;
Arturo Espinosa's avatar
Arturo Espinosa committed
582 583
			} else
				used += len;
584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630

			if (*p == ' ')
				last_was_cut_point = TRUE;
			else
				last_was_cut_point = FALSE;
		}
	} else {
		*w = text_width;
		*h = font_height;
		return;
	}
}

/*
 * cell_calc_dimensions
 * @cell:  The cell
 *
 * This routine updates the dimensions of the the rendered text of a cell
 */
void
cell_calc_dimensions (Cell *cell)
{
	char    *rendered_text;

	g_return_if_fail (cell != NULL);

	if (cell->text){
		Style *style = cell->style;
		int h, w;
		
		rendered_text = CELL_TEXT_GET (cell);

		calc_text_dimensions (cell_is_number (cell),
				      style, rendered_text,
				      COL_INTERNAL_WIDTH (cell->col),
				      ROW_INTERNAL_HEIGHT (cell->row),
				      &h, &w);

		cell->width = cell->col->margin_a + cell->col->margin_b + w;
		cell->height = cell->row->margin_a + cell->row->margin_b + h;

		if (cell->height > cell->row->pixels && !cell->row->hard_size)
			sheet_row_set_internal_height (cell->sheet, cell->row, h);
	} else
		cell->width = cell->col->margin_a + cell->col->margin_b;
}

Arturo Espinosa's avatar
Arturo Espinosa committed
631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709
static void
draw_overflow (GdkDrawable *drawable, GdkGC *gc, GdkFont *font, int x1, int y1, int text_base, int width, int height)
{
	GdkRectangle rect;
	int len = gdk_string_width (font, "#");
	int total, offset;
	
	rect.x = x1;
	rect.y = y1;
	rect.width = width;
	rect.height = height;
	gdk_gc_set_clip_rectangle (gc, &rect);
	
	offset = x1 + width - len;
	for (total = len;  offset > len; total += len){
		gdk_draw_text (drawable, font, gc, x1 + offset, text_base, "#", 1);
		offset -= len;
	} 
}

static GList *
cell_split_text (GdkFont *font, char *text, int width)
{
	GList *list;
	char *p, *line, *line_begin, *ideal_cut_spot = NULL;
	int  line_len, used, last_was_cut_point;

	list = NULL;
	used = 0;
	last_was_cut_point = FALSE;
	for (line_begin = p = text; *p; p++){
		int len;

		if (last_was_cut_point && *p != ' ')
			ideal_cut_spot = p;

		len = gdk_text_width (font, p, 1);

		/* If we have overflowed, do the wrap */
		if (used + len > width){
			char *begin = line_begin;
			
			if (ideal_cut_spot){
				int n = p - ideal_cut_spot + 1;

				line_len = ideal_cut_spot - line_begin;
				used = gdk_text_width (font, ideal_cut_spot, n);
				line_begin = ideal_cut_spot;
			} else {
				used = len;
				line_len = p - line_begin;
				line_begin = p;
			}
			
			line = g_malloc (line_len + 1);
			memcpy (line, begin, line_len);
			line [line_len] = 0;
			list = g_list_append (list, line);

			ideal_cut_spot = NULL;
		} else
			used += len;

		if (*p == ' ')
			last_was_cut_point = TRUE;
		else
			last_was_cut_point = FALSE;
	}
	if (*line_begin){
		line_len = p - line_begin;
		line = g_malloc (line_len);
		memcpy (line, line_begin, line_len);
		line [line_len] = 0;
		list = g_list_append (list, line);
	}

	return list;
}

710
void
Arturo Espinosa's avatar
Arturo Espinosa committed
711
cell_draw (Cell *cell, void *sv, GdkGC *gc, GdkDrawable *drawable, int x1, int y1)
712
{
Arturo Espinosa's avatar
Arturo Espinosa committed
713 714 715 716 717
	Style        *style = cell->style;
	GdkFont      *font = style->font->font;
	SheetView    *sheet_view = sv;
	GdkGC        *white_gc = GTK_WIDGET (sheet_view->sheet_view)->style->white_gc;
	GdkRectangle rect;
718
	
Arturo Espinosa's avatar
Arturo Espinosa committed
719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883
	int start_col, end_col;
	int width, height;
	int text_base = y1 + cell->row->pixels - cell->row->margin_b - font->descent + 1;
	int font_height;
	int halign;
	int do_multi_line;
	char *text;

	cell_get_span (cell, &start_col, &end_col);

	width  = COL_INTERNAL_WIDTH (cell->col);
	height = ROW_INTERNAL_HEIGHT (cell->row);

	gdk_gc_set_function (gc, GDK_COPY);

	font_height = font->ascent + font->descent;
	
	halign = cell_get_horizontal_align (cell);
	text = CELL_TEXT_GET (cell);

	if ((cell->style->valid_flags & STYLE_COLOR) && cell->style->color){
		gdk_gc_set_background (gc, &cell->style->color->background);
	}
	
	/* if a number overflows, do special drawing */
	if (width < cell->width && cell_is_number (cell)){
		draw_overflow (drawable, gc, font, x1 + cell->col->margin_a, y1, text_base,
			       width, height);
		return;
	}

	if (halign == HALIGN_JUSTIFY || style->valign == VALIGN_JUSTIFY || style->fit_in_cell)
		do_multi_line = TRUE;
	else
		do_multi_line = FALSE;

	if (do_multi_line){
		GList *lines, *l;
		int cell_pixel_height = ROW_INTERNAL_HEIGHT (cell->row);
		int line_count, x_offset, y_offset, inter_space;
		
		lines = cell_split_text (font, text, width);
		line_count = g_list_length (lines);

		rect.x = x1;
		rect.y = y1;
		rect.height = cell->height;
		rect.width = cell->width;
		gdk_gc_set_clip_rectangle (gc, &rect);
		
		switch (style->valign){
		case VALIGN_TOP:
			y_offset = 0;
			inter_space = font_height;
			break;
			
		case VALIGN_BOTTOM:
			y_offset = cell_pixel_height - (line_count * font_height);
			inter_space = font_height;
			break;
			
		case VALIGN_CENTER:
			y_offset = (cell_pixel_height - (line_count * font_height))/2;
			inter_space = font_height;
			break;
			
		case VALIGN_JUSTIFY:
			y_offset = 0;
			inter_space = font_height + 
				(cell_pixel_height - (line_count * font_height))
				/ line_count;
			break;
		default:
			g_warning ("Unhandled cell vertical alignment\n");
			y_offset = 0;
			inter_space = font_height;
		}

		y_offset += font_height - 1;
		for (l = lines; l; l = l->next){
			char *str = l->data;

			switch (halign){
			case HALIGN_LEFT:
			case HALIGN_JUSTIFY:
				x_offset = cell->col->margin_a;
				break;
				
			case HALIGN_RIGHT:
				x_offset = cell->col->pixels - cell->col->margin_b - gdk_string_width (font, str);
				break;

			case HALIGN_CENTER:
				x_offset = (cell->col->pixels - cell->width) / 2;
				break;
			default:
				g_warning ("Multi-line justification style not supported\n");
				x_offset = cell->col->margin_a;
			}
			/* Advance one pixel for the border */
			x_offset++;
			gc = GTK_WIDGET (sheet_view->sheet_view)->style->black_gc;
			gdk_draw_text (drawable, font, gc, x1 + x_offset, y1 + y_offset, str, strlen (str));
			y_offset += inter_space;
			
			g_free (str);
		}
		g_list_free (lines);
		
	} else {
		int x, diff, total, len;

		/*
		 * x1, y1 are relative to this cell origin, but the cell might be using
		 * columns to the left (if it is set to right justify or center justify)
		 * compute the pixel difference 
		 */
		if (start_col != cell->col->pos)
			diff = -sheet_col_get_distance (cell->sheet, start_col, cell->col->pos);
		else
			diff = 0;

		/* This rectangle has the whole area used by this cell */
		rect.x = x1 + 1 + diff;
		rect.y = y1 + 1;
		rect.width  = sheet_col_get_distance (cell->sheet, start_col, end_col+1) - 2;
		rect.height = cell->row->pixels - 2;
		
		/* Set the clip rectangle */
		gdk_gc_set_clip_rectangle (gc, &rect);
		gdk_draw_rectangle (drawable, white_gc, TRUE,
				    rect.x, rect.y, rect.width, rect.height);

		len = 0;
		switch (halign){
		case HALIGN_FILL:
			printf ("FILL!\n");
			len = gdk_string_width (font, text);
			/* fall down */
			
		case HALIGN_LEFT:
			x = cell->col->margin_a;
			break;

		case HALIGN_RIGHT:
			x = cell->col->pixels - cell->col->margin_b - cell->width;
			break;

		case HALIGN_CENTER:
			x = (cell->col->pixels - cell->width)/2;
			break;
			
		default:
			g_warning ("Single-line justification style not supported\n");
			x = cell->col->margin_a;
			break;
		}

		total = 0;
		do {
			gdk_draw_text (drawable, font, gc, 1 + x1 + x, text_base, text, strlen (text));
			x1 += len;
			total += len;
		} while (halign == HALIGN_FILL && total < rect.width);
	}
884
}
Arturo Espinosa's avatar
Arturo Espinosa committed
885 886