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Reset child position/sizes before calculating layout

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This commit is contained in:
Pieter De Baets
2016-03-25 22:37:00 +01:00
parent 8d5cdd4e6c
commit b157ab4a00
9 changed files with 334 additions and 14 deletions
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22
dist/css-layout.h vendored
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@@ -141,8 +141,8 @@ struct css_node {
int children_count;
int line_index;
css_node_t* next_absolute_child;
css_node_t* next_flex_child;
css_node_t *next_absolute_child;
css_node_t *next_flex_child;
css_dim_t (*measure)(void *context, float width, float height);
void (*print)(void *context);
@@ -151,7 +151,6 @@ struct css_node {
void *context;
};
// Lifecycle of nodes and children
css_node_t *new_css_node(void);
void init_css_node(css_node_t *node);
@@ -165,9 +164,13 @@ typedef enum {
} css_print_options_t;
void print_css_node(css_node_t *node, css_print_options_t options);
bool isUndefined(float value);
// Function that computes the layout!
void layoutNode(css_node_t *node, float maxWidth, float maxHeight, css_direction_t parentDirection);
bool isUndefined(float value);
// Reset the calculated layout values for a given node. You should call this before `layoutNode`.
void resetNodeLayout(css_node_t *node);
#endif
@@ -1460,6 +1463,10 @@ void layoutNode(css_node_t *node, float parentMaxWidth, float parentMaxHeight, c
layout->last_parent_max_height = parentMaxHeight;
layout->last_direction = direction;
for (int i = 0, childCount = node->children_count; i < childCount; i++) {
resetNodeLayout(node->get_child(node->context, i));
}
layoutNodeImpl(node, parentMaxWidth, parentMaxHeight, parentDirection);
layout->last_dimensions[CSS_WIDTH] = layout->dimensions[CSS_WIDTH];
@@ -1469,4 +1476,11 @@ void layoutNode(css_node_t *node, float parentMaxWidth, float parentMaxHeight, c
}
}
void resetNodeLayout(css_node_t *node) {
node->layout.dimensions[CSS_WIDTH] = CSS_UNDEFINED;
node->layout.dimensions[CSS_HEIGHT] = CSS_UNDEFINED;
node->layout.position[CSS_LEFT] = 0;
node->layout.position[CSS_TOP] = 0;
}
#endif // CSS_LAYOUT_IMPLEMENTATION