1 files changed, 89 insertions, 0 deletions
diff --git a/src/select/properties/line_height.c b/src/select/properties/line_height.c
new file mode 100644
index 0000000..b292ddb
--- /dev/null
+++ b/src/select/properties/line_height.c
@@ -0,0 +1,89 @@
+/*
+ * This file is part of LibCSS
+ * Licensed under the MIT License,
+ *		  http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
+ */
+
+#include "bytecode/bytecode.h"
+#include "bytecode/opcodes.h"
+#include "select/propset.h"
+#include "select/propget.h"
+#include "utils/utils.h"
+
+#include "select/properties/properties.h"
+#include "select/properties/helpers.h"
+
+css_error cascade_line_height(uint32_t opv, css_style *style, 
+		css_select_state *state)
+{
+	uint16_t value = CSS_LINE_HEIGHT_INHERIT;
+	css_fixed val = 0;
+	uint32_t unit = UNIT_PX;
+
+	if (isInherit(opv) == false) {
+		switch (getValue(opv)) {
+		case LINE_HEIGHT_NUMBER:
+			value = CSS_LINE_HEIGHT_NUMBER;
+			val = *((css_fixed *) style->bytecode);
+			advance_bytecode(style, sizeof(val));
+			break;
+		case LINE_HEIGHT_DIMENSION:
+			value = CSS_LINE_HEIGHT_DIMENSION;
+			val = *((css_fixed *) style->bytecode);
+			advance_bytecode(style, sizeof(val));
+			unit = *((uint32_t *) style->bytecode);
+			advance_bytecode(style, sizeof(unit));
+			break;
+		case LINE_HEIGHT_NORMAL:
+			value = CSS_LINE_HEIGHT_NORMAL;
+			break;
+		}
+	}
+
+	unit = to_css_unit(unit);
+
+	if (outranks_existing(getOpcode(opv), isImportant(opv), state,
+			isInherit(opv))) {
+		return set_line_height(state->result, value, val, unit);
+	}
+
+	return CSS_OK;
+}
+
+css_error set_line_height_from_hint(const css_hint *hint,
+		css_computed_style *style)
+{
+	return set_line_height(style, hint->status,
+			hint->data.length.value, hint->data.length.unit);
+}
+
+css_error initial_line_height(css_select_state *state)
+{
+	return set_line_height(state->result, CSS_LINE_HEIGHT_NORMAL, 
+			0, CSS_UNIT_PX);
+}
+
+css_error compose_line_height(const css_computed_style *parent,
+		const css_computed_style *child,
+		css_computed_style *result)
+{
+	css_fixed length = 0;
+	css_unit unit = CSS_UNIT_PX;
+	uint8_t type = get_line_height(child, &length, &unit);
+
+	if (type == CSS_LINE_HEIGHT_INHERIT) {
+		type = get_line_height(parent, &length, &unit);
+	}
+
+	return set_line_height(result, type, length, unit);
+}
+
+uint32_t destroy_line_height(void *bytecode)
+{
+	uint32_t value = getValue(*((uint32_t*)bytecode));
+	if (value == LINE_HEIGHT_NUMBER)
+		return generic_destroy_number(bytecode);
+	else
+		return generic_destroy_length(bytecode);
+}