Files
panopainter/src/legacy_ui_node_execution.cpp

100 lines
3.2 KiB
C++

#include "pch.h"
#include "node.h"
void Node::restore_context()
{
for (auto& c : m_children)
c->restore_context();
}
void Node::clear_context()
{
for (auto& c : m_children)
c->clear_context();
}
void Node::update(float width, float height, float zoom)
{
m_zoom = zoom;
YGNodeStyleSetWidth(y_node, (width / zoom));
YGNodeStyleSetHeight(y_node, (height / zoom));
YGNodeCalculateLayout(y_node, YGUndefined, YGUndefined, YGDirectionLTR);
m_proj = glm::ortho(0.f, (width / zoom), (height / zoom), 0.f, -1.f, 1.f);
update_internal({ 0, 0 }, m_proj, zoom);
}
void Node::update()
{
YGNodeCalculateLayout(y_node, YGUndefined, YGUndefined, YGDirectionLTR);
update_internal({ 0, 0 }, m_proj, m_zoom);
}
void Node::update_internal(const glm::vec2& origin, const glm::mat4& proj, float zoom)
{
float x = YGNodeLayoutGetLeft(y_node);
float y = YGNodeLayoutGetTop(y_node);
float w = YGNodeLayoutGetWidth(y_node);
float h = YGNodeLayoutGetHeight(y_node);
auto old_size = m_size;
if (YGNodeStyleGetWidth(y_node).unit == YGUnit::YGUnitAuto)
w -= m_pos_offset.x;
//if (YGNodeStyleGetHeight(y_node).unit == YGUnit::YGUnitAuto)
// h -= m_pos_offset.y;
m_pos = /*glm::floor*/(origin + glm::vec2(x, y) + m_pos_offset);
m_pos_origin = /*glm::floor*/(origin + glm::vec2(x, y));
m_size = /*glm::floor*/(glm::vec2(w, h));
if (m_parent)
{
// correct the padding clip
// should not clip the padded area
// useful to draw decorations
float pt = YGNodeLayoutGetPadding(m_parent->y_node, YGEdgeTop);
float pr = YGNodeLayoutGetPadding(m_parent->y_node, YGEdgeRight);
float pb = YGNodeLayoutGetPadding(m_parent->y_node, YGEdgeBottom);
float pl = YGNodeLayoutGetPadding(m_parent->y_node, YGEdgeLeft);
glm::vec2 off_p(pl, pt);
glm::vec2 off_s(pr, pb);
glm::vec4 pclip = { xy(m_parent->m_clip) + off_p, zw(m_parent->m_clip) - (off_s + off_p) };
m_clip_uncut = glm::vec4(m_pos - glm::vec2(1), m_size + glm::vec2(2));
m_clip = rect_intersection(m_clip_uncut, m_parent->m_clip);
}
else
{
m_clip_uncut = m_clip = glm::vec4(m_pos, m_size);
}
glm::mat4 pivot = glm::translate(glm::vec3(.5f, .5f, 0.f));
glm::mat4 scale = glm::scale(glm::vec3(m_size, 1.f));
glm::mat4 prescale = glm::scale(glm::vec3(m_scale, 1.f));
glm::mat4 pos = glm::translate(glm::vec3(m_pos, 0));
m_mvp = proj * pos * scale * pivot * prescale;
m_proj = proj;
if (!glm::any(glm::isnan(m_size)) && m_size != old_size || m_zoom != zoom)
{
m_zoom = zoom;
handle_resize(old_size, m_size, zoom);
for (auto& c : m_children)
c->handle_parent_resize(old_size, m_size);
}
for (auto& c : m_children)
{
c->m_pos_offset = m_pos_offset + m_pos_offset_childred;
c->update_internal(m_pos_origin, proj, zoom);
}
m_children.erase(std::remove_if(m_children.begin(), m_children.end(),
[](const auto& n) { return n->m_destroyed; }), m_children.end());
}
void Node::tick(float dt)
{
for (auto& c : m_children)
c->tick(dt);
on_tick(dt);
}