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System/Libraries/Html/Reflow: Handle dynamic width/height for images

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Alec Murphy 2025-05-03 18:28:54 -04:00
parent 04ae4c4055
commit 2b1851772e
1 changed files with 163 additions and 11 deletions
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172
System/Libraries/Html/Reflow.HC
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@ -116,22 +116,174 @@ U0 @reflow_resolve_dynamic_width_and_height(@html_dom_node* node)
node->resolvedHeight = @reflow_resolve_css_distance(node->parentNode->height, node->height, node->heightDistanceType);
}
U0 @reflow_set_image_widget_dimensions_from_base(Context2DWidget* widget)
{
@html_dom_node* node = widget->data;
widget->width = node->resolvedWidth = node->width = widget->base->width;
widget->height = node->resolvedHeight = node->height = widget->base->height;
node->widthDistanceType = CSS_DISTANCE_PIXELS;
node->heightDistanceType = CSS_DISTANCE_PIXELS;
}
U0 @reflow_set_image_widget_dimensions_from_context(Context2DWidget* widget)
{
@html_dom_node* node = widget->data;
widget->width = node->resolvedWidth = node->width = widget->ctx->width;
widget->height = node->resolvedHeight = node->height = widget->ctx->height;
node->widthDistanceType = CSS_DISTANCE_PIXELS;
node->heightDistanceType = CSS_DISTANCE_PIXELS;
}
Bool @reflow_image_size_will_not_change(Context2DWidget* widget)
{
@html_dom_node* node = widget->data;
return (node->resolvedWidth && node->resolvedHeight && widget->width == node->resolvedWidth && widget->height == node->resolvedHeight);
}
// renderer->reflow.parent->width, renderer->reflow.parent->height;
U0 @reflow_set_image_widget_dimensions_from_node_width_and_height(Context2DWidget* widget, HtmlRenderer* renderer)
{
@html_dom_node* node = widget->data;
F64 scale_x = 0;
F64 scale_y = 0;
switch (node->widthDistanceType) {
case CSS_DISTANCE_PIXELS:
scale_x = node->width / ToF64(widget->base->width);
break;
case CSS_DISTANCE_PERCENT:
scale_x = (ToF64(renderer->reflow.parent->width * (node->width / 100.0)) / ToF64(widget->base->width));
return;
default:
break;
}
switch (node->heightDistanceType) {
case CSS_DISTANCE_PIXELS:
scale_y = node->height / ToF64(widget->base->height);
break;
case CSS_DISTANCE_PERCENT:
scale_y = (ToF64(renderer->reflow.parent->height * (node->height / 100.0)) / ToF64(widget->base->height));
return;
default:
break;
}
if (scale_x == 0.0 && scale_y == 0.0) {
// Something went wrong, or unsupported distance type, use default values
@reflow_set_image_widget_dimensions_from_base(widget);
}
if (scale_x == 1.0 && scale_y == 1.0) {
// We are the same aspect ratio, use default values
@reflow_set_image_widget_dimensions_from_base(widget);
}
widget->ctx = Scale2D(widget->base, scale_x, scale_y);
@reflow_set_image_widget_dimensions_from_context(widget);
}
U0 @reflow_set_image_widget_dimensions_from_node_width(Context2DWidget* widget, HtmlRenderer* renderer)
{
@html_dom_node* node = widget->data;
F64 scale = 0;
switch (node->widthDistanceType) {
case CSS_DISTANCE_PIXELS:
// If node width matches image width, set the values to the width and height of the image
if (ToI64(node->width) == widget->base->width) {
@reflow_set_image_widget_dimensions_from_base(widget);
return;
}
scale = node->width / ToF64(widget->base->width);
widget->ctx = Scale2D(widget->base, scale, scale);
@reflow_set_image_widget_dimensions_from_context(widget);
break;
case CSS_DISTANCE_PERCENT:
if (!renderer->reflow.parent->width)
return;
scale = (ToF64(renderer->reflow.parent->width * (node->width / 100.0)) / ToF64(widget->base->width));
widget->ctx = Scale2D(widget->base, scale, scale);
@reflow_set_image_widget_dimensions_from_context(widget);
return;
default:
break;
}
}
U0 @reflow_set_image_widget_dimensions_from_node_height(Context2DWidget* widget, HtmlRenderer* renderer)
{
@html_dom_node* node = widget->data;
F64 scale = 0;
switch (node->heightDistanceType) {
case CSS_DISTANCE_PIXELS:
// If node width matches image height, set the values to the width and height of the image
if (ToI64(node->height) == widget->base->height) {
@reflow_set_image_widget_dimensions_from_base(widget);
return;
}
scale = node->height / ToF64(widget->base->height);
widget->ctx = Scale2D(widget->base, scale, scale);
@reflow_set_image_widget_dimensions_from_context(widget);
break;
case CSS_DISTANCE_PERCENT:
if (!renderer->reflow.parent->height)
return;
scale = (ToF64(renderer->reflow.parent->height * (node->height / 100.0)) / ToF64(widget->base->height));
widget->ctx = Scale2D(widget->base, scale, scale);
@reflow_set_image_widget_dimensions_from_context(widget);
return;
default:
break;
}
}
U0 @reflow_resolve_image_resizing(Context2DWidget* widget, HtmlRenderer* renderer)
{
@html_dom_node* node = widget->data;
if (!widget->base || !widget->base->width || !widget->base->height)
return;
if (@reflow_image_size_will_not_change(widget))
return;
// If node width and height are both zero, set their values to the width and height of the image
if (!ToI64(node->width) && !ToI64(node->height)) {
@reflow_set_image_widget_dimensions_from_base(widget);
return;
}
// If the node width and height are both undefined type, set their values to the width and height of the image
if (!node->widthDistanceType && !node->heightDistanceType) {
@reflow_set_image_widget_dimensions_from_base(widget);
return;
}
if (node->widthDistanceType && node->heightDistanceType) {
@reflow_set_image_widget_dimensions_from_node_width_and_height(widget, renderer);
return;
}
if (node->widthDistanceType && !node->heightDistanceType) {
@reflow_set_image_widget_dimensions_from_node_width(widget, renderer);
return;
}
if (!node->widthDistanceType && node->heightDistanceType) {
@reflow_set_image_widget_dimensions_from_node_height(widget, renderer);
return;
}
}
U0 @reflow_resolve_dimensions_for_widget(Widget* widget, HtmlRenderer* renderer)
{
@html_dom_node* node = widget->data;
// FIXME: Handle dynamic width/height for images
if (!StrICmp(node->tagName, "img") && (!widget->width || !widget->height)) {
if (widget->type == WIDGET_TYPE_CONTEXT2D && widget(Context2DWidget*)->ctx) {
node->width = widget(Context2DWidget*)->ctx->width;
node->widthDistanceType = CSS_DISTANCE_PIXELS;
node->height = widget(Context2DWidget*)->ctx->height;
node->heightDistanceType = CSS_DISTANCE_PIXELS;
widget->width = node->resolvedWidth = node->width;
widget->height = node->resolvedHeight = node->height;
if (node && !StrICmp(node->tagName, "img") && widget->type == WIDGET_TYPE_CONTEXT2D) {
@reflow_resolve_image_resizing(widget, renderer);
return;
}
}
// set a random bgcolor for the widget, so we can tell what is what during debugging
if (reflow_debug) {