/* Lasem * * Copyright © 2007-2008 Emmanuel Pacaud * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General * Public License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. * * Author: * Emmanuel Pacaud */ #include #include #include #include #include #include static GObject *parent_class; /* LsmDomNode implementation */ static const char * lsm_mathml_operator_element_get_node_name (LsmDomNode *node) { return "mo"; } static const LsmMathmlOperatorDictionaryEntry * lsm_mathml_operator_element_dictionary_lookup (LsmMathmlOperatorElement *operator) { const LsmMathmlOperatorDictionaryEntry *entry; LsmDomNode *node = LSM_DOM_NODE (operator); LsmMathmlForm form; char *text; for (node = LSM_DOM_NODE (operator); node->parent_node != NULL && LSM_IS_MATHML_ELEMENT (node->parent_node) && lsm_mathml_element_get_embellished_core (LSM_MATHML_ELEMENT (node->parent_node)) == operator; node = node->parent_node); text = lsm_mathml_presentation_token_get_text (LSM_MATHML_PRESENTATION_TOKEN (operator)); if (LSM_IS_MATHML_ELEMENT (node->parent_node)) { if (lsm_mathml_element_is_inferred_row (LSM_MATHML_ELEMENT (node->parent_node))) { if ((node->previous_sibling != NULL && node->next_sibling != NULL) || (node->previous_sibling == NULL && node->next_sibling == NULL)) form = LSM_MATHML_FORM_INFIX; else if (node->previous_sibling == NULL) form = LSM_MATHML_FORM_PREFIX; else form = LSM_MATHML_FORM_POSTFIX; } else if (LSM_IS_MATHML_UNDER_OVER_ELEMENT (node->parent_node) && node->previous_sibling != NULL) { form = LSM_MATHML_FORM_POSTFIX; } else if (LSM_IS_MATHML_SCRIPT_ELEMENT (node->parent_node) && node->previous_sibling != NULL) { form = LSM_MATHML_FORM_POSTFIX; } else form = LSM_MATHML_FORM_INFIX; } else form = LSM_MATHML_FORM_INFIX; form = lsm_mathml_enum_attribute_inherit (&operator->form, form); entry = lsm_mathml_operator_dictionary_lookup (text, form); g_free (text); return entry; } static void lsm_mathml_operator_element_post_new_child (LsmDomNode *self, LsmDomNode *child) { LsmMathmlOperatorElement *operator_element = LSM_MATHML_OPERATOR_ELEMENT (self); const LsmMathmlOperatorDictionaryEntry *entry; entry = lsm_mathml_operator_element_dictionary_lookup (operator_element); lsm_debug_dom ("[OperatorElement::post_new_child] found %s %s", lsm_mathml_form_to_string (entry->form), entry->name); lsm_mathml_boolean_attribute_inherit (&operator_element->stretchy, entry->stretchy); lsm_mathml_boolean_attribute_inherit (&operator_element->fence, entry->fence); lsm_mathml_boolean_attribute_inherit (&operator_element->accent, entry->accent); } /* LsmMathmlElement implementation */ static void lsm_mathml_operator_element_update (LsmMathmlElement *self, LsmMathmlStyle *style) { LsmMathmlOperatorElement *operator_element = LSM_MATHML_OPERATOR_ELEMENT (self); const LsmMathmlOperatorDictionaryEntry *entry; LsmMathmlSpace space; LSM_MATHML_ELEMENT_CLASS (parent_class)->update (self, style); entry = lsm_mathml_operator_element_dictionary_lookup (operator_element); lsm_debug_update ("[OperatorElement::update] found %s %s", lsm_mathml_form_to_string (entry->form), entry->name); space = entry->left_space; lsm_mathml_space_attribute_normalize (&operator_element->left_space, 0.0, &space, style); space = entry->right_space; lsm_mathml_space_attribute_normalize (&operator_element->right_space, 0.0, &space, style); lsm_mathml_boolean_attribute_inherit (&operator_element->stretchy, entry->stretchy); lsm_mathml_boolean_attribute_inherit (&operator_element->fence, entry->fence); lsm_mathml_boolean_attribute_inherit (&operator_element->accent, entry->accent); if (operator_element->accent.value) lsm_debug_update ("[OperatorElement::update] Is accent"); lsm_mathml_boolean_attribute_inherit (&operator_element->large_op, entry->large_op); lsm_mathml_boolean_attribute_inherit (&operator_element->movable_limits, entry->movable_limits); lsm_mathml_boolean_attribute_inherit (&operator_element->separator, entry->separator); space = entry->min_size; lsm_mathml_space_attribute_normalize (&operator_element->min_size, 0.0, &space, style); space = entry->max_size; lsm_mathml_space_attribute_normalize (&operator_element->max_size, 0.0, &space, style); lsm_mathml_boolean_attribute_inherit (&operator_element->symmetric, entry->symmetric); operator_element->is_large_op = operator_element->large_op.value && (style->display == LSM_MATHML_DISPLAY_BLOCK); if (operator_element->is_large_op) lsm_debug_update ("[OperatorElement::update] Large op"); } static const LsmMathmlBbox * lsm_mathml_operator_element_measure (LsmMathmlElement *self, LsmMathmlView *view, const LsmMathmlBbox *stretch_bbox) { LsmMathmlOperatorElement *operator_element = LSM_MATHML_OPERATOR_ELEMENT (self); char *text; text = lsm_mathml_presentation_token_get_text (LSM_MATHML_PRESENTATION_TOKEN (self)); self->bbox = lsm_mathml_bbox_null; lsm_mathml_view_measure_operator (view, &self->style, text, operator_element->is_large_op, operator_element->symmetric.value, lsm_mathml_view_measure_axis_offset (view, self->style.math_size), operator_element->min_size.value, operator_element->max_size.value, operator_element->stretchy.value ? stretch_bbox : &lsm_mathml_bbox_null, &self->bbox); g_free (text); self->bbox.width += self->style.math_size * LSM_MATHML_SPACE_EM_VERY_THIN; return &self->bbox; } static void lsm_mathml_operator_element_render (LsmMathmlElement *self, LsmMathmlView *view) { LsmMathmlOperatorElement *operator_element = LSM_MATHML_OPERATOR_ELEMENT (self); LsmMathmlBbox stretch_bbox; char *text; text = lsm_mathml_presentation_token_get_text (LSM_MATHML_PRESENTATION_TOKEN (self)); stretch_bbox = self->bbox; stretch_bbox.width -= self->style.math_size * LSM_MATHML_SPACE_EM_VERY_THIN; lsm_mathml_view_show_operator (view, &self->style, self->x + 0.5 * self->style.math_size * LSM_MATHML_SPACE_EM_VERY_THIN, self->y, text, operator_element->is_large_op, &stretch_bbox); g_free (text); } static LsmMathmlOperatorElement * lsm_mathml_operator_element_get_embellished_core (const LsmMathmlElement *self) { return LSM_MATHML_OPERATOR_ELEMENT (self); } /* LsmMathmlOperatorElement implementation */ double lsm_mathml_operator_element_get_slant (const LsmMathmlOperatorElement *operator_element, LsmMathmlView *view) { char *text; g_return_val_if_fail (LSM_IS_MATHML_OPERATOR_ELEMENT (operator_element), 0.0); text = lsm_mathml_presentation_token_get_text (LSM_MATHML_PRESENTATION_TOKEN (operator_element)); return lsm_mathml_view_get_operator_slant (view, &LSM_MATHML_ELEMENT (operator_element)->style, text); } LsmDomNode * lsm_mathml_operator_element_new (void) { return g_object_new (LSM_TYPE_MATHML_OPERATOR_ELEMENT, NULL); } static void lsm_mathml_operator_element_init (LsmMathmlOperatorElement *self) { } /* LsmMathmlOperatorElement class */ static const LsmAttributeInfos _attribute_infos[] = { { .name = "form", .attribute_offset = offsetof (LsmMathmlOperatorElement, form), .trait_class = &lsm_mathml_form_trait_class }, { .name = "lspace", .attribute_offset = offsetof (LsmMathmlOperatorElement, left_space), .trait_class = &lsm_mathml_space_trait_class }, { .name = "rspace", .attribute_offset = offsetof (LsmMathmlOperatorElement, right_space), .trait_class = &lsm_mathml_space_trait_class }, { .name = "stretchy", .attribute_offset = offsetof (LsmMathmlOperatorElement, stretchy), .trait_class = &lsm_mathml_boolean_trait_class, }, { .name = "fence", .attribute_offset = offsetof (LsmMathmlOperatorElement, fence), .trait_class = &lsm_mathml_boolean_trait_class }, { .name = "accent", .attribute_offset = offsetof (LsmMathmlOperatorElement, accent), .trait_class = &lsm_mathml_boolean_trait_class, }, { .name = "large_op", .attribute_offset = offsetof (LsmMathmlOperatorElement, large_op), .trait_class = &lsm_mathml_boolean_trait_class, }, { .name = "movable_limits", .attribute_offset = offsetof (LsmMathmlOperatorElement, movable_limits), .trait_class = &lsm_mathml_boolean_trait_class, }, { .name = "separator", .attribute_offset = offsetof (LsmMathmlOperatorElement, separator), .trait_class = &lsm_mathml_boolean_trait_class, }, { .name = "minsize", .attribute_offset = offsetof (LsmMathmlOperatorElement, min_size), .trait_class = &lsm_mathml_space_trait_class }, { .name = "maxsize", .attribute_offset = offsetof (LsmMathmlOperatorElement, max_size), .trait_class = &lsm_mathml_space_trait_class }, { .name = "symmetric", .attribute_offset = offsetof (LsmMathmlOperatorElement, symmetric), .trait_class = &lsm_mathml_boolean_trait_class, } }; static void lsm_mathml_operator_element_class_init (LsmMathmlOperatorElementClass *operator_class) { LsmDomNodeClass *d_node_class = LSM_DOM_NODE_CLASS (operator_class); LsmMathmlElementClass *m_element_class = LSM_MATHML_ELEMENT_CLASS (operator_class); parent_class = g_type_class_peek_parent (operator_class); d_node_class->get_node_name = lsm_mathml_operator_element_get_node_name; d_node_class->post_new_child = lsm_mathml_operator_element_post_new_child; m_element_class->update = lsm_mathml_operator_element_update; m_element_class->measure = lsm_mathml_operator_element_measure; m_element_class->render = lsm_mathml_operator_element_render; m_element_class->get_embellished_core = lsm_mathml_operator_element_get_embellished_core; m_element_class->attribute_manager = lsm_attribute_manager_duplicate (m_element_class->attribute_manager); lsm_attribute_manager_add_attributes (m_element_class->attribute_manager, G_N_ELEMENTS (_attribute_infos), _attribute_infos); } G_DEFINE_TYPE (LsmMathmlOperatorElement, lsm_mathml_operator_element, LSM_TYPE_MATHML_PRESENTATION_TOKEN)