diff options
Diffstat (limited to 'render/loosen.c')
-rw-r--r-- | render/loosen.c | 103 |
1 files changed, 97 insertions, 6 deletions
diff --git a/render/loosen.c b/render/loosen.c index a6f3053ff..88f89a1c6 100644 --- a/render/loosen.c +++ b/render/loosen.c @@ -23,13 +23,15 @@ #include "render/box.h" #include "render/font.h" + +#include "render/layout.h" #include "render/loosen.h" #include "utils/log.h" #include "utils/talloc.h" #define AUTO INT_MIN - +#define LOOSEN_MIN_TEXT_SIZE 10 static bool loosen_text(struct box *text, int width, struct content *content); @@ -45,8 +47,10 @@ static bool loosen_all_first_pass(struct box *box, int width, int cx, struct content *content); static bool loosen_all_second_pass(struct box *box, int width, int cx, struct content *content); -static bool loosen_all_third_pass(struct box *box, int width, int cx, +static bool loosen_all_margins_paddings(struct box *box, int width, int cx, struct content *content); + +static bool loosen_shrink_text(struct box *box); /** * Main loosing procedure @@ -84,7 +88,7 @@ bool loosen_document_layout(struct content *content, struct box *layout, } if (content->width > width) { - if (!loosen_all_third_pass(layout, width, 0, content)) + if (!loosen_all_margins_paddings(layout, width, 0, content)) return false; layout->min_width = 0; layout->max_width = UNKNOWN_MAX_WIDTH; @@ -166,6 +170,9 @@ bool loosen_text(struct box *text, int width, struct content *content) /** * Changing table layout and structure to fit the contents width. + * Firstly the borders are collapsed and the text is shrunken. + * Secondly the text is loosened( this can be helpful for all data tables which + * contain only text) * In the most extreme case - the table has no influence on the width * (each row is broken into one-cell rows). * \param table - the box that contains table to be broken @@ -177,9 +184,66 @@ bool loosen_table(struct box *table, int width, struct content *content) { struct box *row_group, *row, *cell, *br, *prev, *inline_container; + struct box *text, *child; + unsigned int row_sum; + bool first_cell_in_row; + const struct font_functions *font_func; + float scale; + int new_width; + if (table->min_width <= width) - return true; + return true; + if (content->type == CONTENT_HTML) + font_func = content->data.html.font_func; + else + return false; + + table->style->border_collapse = CSS_BORDER_COLLAPSE_COLLAPSE; + + if (!loosen_shrink_text(table)) + return false; + + if (!loosen_all_margins_paddings(table, width, 0, content)) + return false; + + scale = width; + scale /= table->min_width; + + for (row_group = table->children; row_group; + row_group = row_group->next) { + for (row = row_group->children; row; row = row->next) { + for (cell = row->children; cell; cell = cell->next) { + for (child = cell->children; child; + child = child->next) { + if (child->children) + text = child->children; + else + continue; + + /*text in nested boxes won't be broken*/ + if (text->type != BOX_TEXT) + continue; + + + /*break the words propotionally to the + current cell width*/ + new_width = (float)cell->width * scale * 0.9; + loosen_text(text, new_width, content); + } + } + } + } + + + /*check if the table is loosend enough...*/ + layout_minmax_table(table, font_func); + if (table->min_width <= width) + return true; + + + /*...in case it's not continue with bigger changes, + table cells are changed into inline containers*/ inline_container = box_create(0, 0, 0, 0, 0, content); inline_container->type = BOX_INLINE_CONTAINER; inline_container->parent = table; @@ -232,6 +296,31 @@ bool loosen_table(struct box *table, int width, struct content *content) return true; } +/** +* Recursively step through the box tree applying LOOSEN_MIN_TEXT_SIZE wherever +* text is found +* \param box the box where the shrinking should be started +* \return true if successful, false otherwise +*/ +bool loosen_shrink_text(struct box *box) +{ + struct box *child; + + box->max_width = UNKNOWN_MAX_WIDTH; + + if (box->type == BOX_TEXT) { + box->style->font_size.size = CSS_FONT_SIZE_LENGTH; + box->style->font_size.value.length.unit = CSS_UNIT_PX; + box->style->font_size.value.length.value = LOOSEN_MIN_TEXT_SIZE; + } + else if (box->children) + for(child = box->children; child; child = child->next) + if (!loosen_shrink_text(child)) + return false; + + return true; +} + /** * Change absolute and relative positioned elements into block elements @@ -352,6 +441,8 @@ bool loosen_all_second_pass(struct box *box, int width, int cx, if (!loosen_table(c, width, content)) return false; break; + default: + break; } c->min_width = 0; @@ -370,7 +461,7 @@ bool loosen_all_second_pass(struct box *box, int width, int cx, * \param content talloc memory pool for new boxes * \return true if successful, false otherwise */ -bool loosen_all_third_pass(struct box *box, int width, int cx, +bool loosen_all_margins_paddings(struct box *box, int width, int cx, struct content *content) { struct box *c; @@ -379,7 +470,7 @@ bool loosen_all_third_pass(struct box *box, int width, int cx, for (c = box->children; c; c = c->next) { x = cx + c->x; if (c->children != NULL) - if (!loosen_all_third_pass(c, width, x, content)) + if (!loosen_all_margins_paddings(c, width, x, content)) return false; c->padding[LEFT] = c->padding[RIGHT] = 0; |