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refactoring layout loader

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This commit is contained in:
omigamedev
2017-01-26 23:57:05 +00:00
parent 5ae77ee4ac
commit 81494cca6e
3 changed files with 329 additions and 43 deletions
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369
engine/app.cpp
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@@ -19,6 +19,257 @@ glm::vec4 rect_intersection(glm::vec4 a, glm::vec4 b)
return o;
}
class Node
{
const Node* parent{ nullptr };
YGNodeRef y_node{ nullptr };
struct stat m_file_info { 0 };
public:
std::vector<Node> children;
glm::vec4 color;
glm::vec2 m_pos;
glm::vec2 m_size;
glm::vec4 m_clip;
Node(const Node&) = delete;
Node& operator=(const Node&) = delete;
Node& operator=(Node&& o) { return Node(std::forward<Node>(o)); }
Node(Node&& o)
{
children = std::move(o.children);
parent = o.parent;
y_node = o.y_node;
m_pos = o.m_pos;
m_size = o.m_size;
m_clip = o.m_clip;
color = o.color;
m_file_info = o.m_file_info;
o.y_node = nullptr;
o.parent = nullptr;
}
Node() { y_node = YGNodeNew(); }
~Node()
{
// children.clear();
if (y_node)
YGNodeFree(y_node);
}
void SetWidth(float value) { YGNodeStyleSetWidth(y_node, value); }
void SetWidthP(float value) { YGNodeStyleSetWidthPercent(y_node, value); }
void SetHeight(float value) { YGNodeStyleSetHeight(y_node, value); }
void SetHeightP(float value) { YGNodeStyleSetHeightPercent(y_node, value); }
void SetPadding(float t, float r, float b, float l)
{
YGNodeStyleSetPadding(y_node, YGEdgeTop, t);
YGNodeStyleSetPadding(y_node, YGEdgeRight, r);
YGNodeStyleSetPadding(y_node, YGEdgeBottom, b);
YGNodeStyleSetPadding(y_node, YGEdgeLeft, l);
}
void SetFlexGrow(float value) { YGNodeStyleSetFlexGrow(y_node, value); }
void SetFlexShrink(float value) { YGNodeStyleSetFlexShrink(y_node, value); }
void SetFlexDir(YGFlexDirection value) { YGNodeStyleSetFlexDirection(y_node, value); }
void SetFlexWrap(YGWrap value) { YGNodeStyleSetFlexWrap(y_node, value); }
void update(float width, float height)
{
YGNodeStyleSetWidth(y_node, width);
YGNodeStyleSetHeight(y_node, height);
YGNodeCalculateLayout(y_node, YGUndefined, YGUndefined, YGDirectionLTR);
update_internal({ 0, 0 });
}
void update_internal(glm::vec2 origin)
{
float x = YGNodeLayoutGetLeft(y_node);
float y = YGNodeLayoutGetTop(y_node);
float w = YGNodeLayoutGetWidth(y_node);
float h = YGNodeLayoutGetHeight(y_node);
m_pos = origin + glm::vec2(x, y);
m_size = glm::vec2(w, h);
if (!parent)
m_clip = glm::vec4(m_pos, m_size);
else
m_clip = rect_intersection(glm::vec4(m_pos, m_size), parent->m_clip);
for (auto& c : children)
c.update_internal(m_pos);
}
void parse_attributes(att::kAttribute ka, const tinyxml2::XMLAttribute* attr)
{
switch (ka)
{
case att::kAttribute::Width:
if (strcmp(attr->Value(), "auto") == 0)
{
YGNodeStyleSetWidth(y_node, YGUndefined);
YGNodeStyleSetWidthPercent(y_node, YGUndefined);
}
else
{
if (strchr(attr->Value(), '%'))
YGNodeStyleSetWidthPercent(y_node, attr->FloatValue());
else
YGNodeStyleSetWidth(y_node, attr->FloatValue());
}
break;
case att::kAttribute::MinWidth:
if (strchr(attr->Value(), '%'))
YGNodeStyleSetMinWidthPercent(y_node, attr->FloatValue());
else
YGNodeStyleSetMinWidth(y_node, attr->FloatValue());
break;
case att::kAttribute::MaxWidth:
YGNodeStyleSetMaxWidth(y_node, attr->FloatValue());
break;
case att::kAttribute::Height:
if (strcmp(attr->Value(), "auto") == 0)
{
YGNodeStyleSetHeight(y_node, YGUndefined);
YGNodeStyleSetHeightPercent(y_node, YGUndefined);
}
else
{
if (strchr(attr->Value(), '%'))
YGNodeStyleSetHeightPercent(y_node, attr->FloatValue());
else
YGNodeStyleSetHeight(y_node, attr->FloatValue());
}
break;
case att::kAttribute::MinHeight:
YGNodeStyleSetMinHeight(y_node, attr->FloatValue());
break;
case att::kAttribute::MaxHeight:
YGNodeStyleSetMaxHeight(y_node, attr->FloatValue());
break;
case att::kAttribute::Grow:
YGNodeStyleSetFlexGrow(y_node, attr->FloatValue());
break;
case att::kAttribute::Shrink:
YGNodeStyleSetFlexShrink(y_node, attr->FloatValue());
break;
case att::kAttribute::FlexDir:
{
YGFlexDirection dir = YGFlexDirectionRow;
if (strcmp("col", attr->Value()) == 0)
dir = YGFlexDirectionColumn;
else if (strcmp("col-reverse", attr->Value()) == 0)
dir = YGFlexDirectionColumnReverse;
else if (strcmp("row", attr->Value()) == 0)
dir = YGFlexDirectionRow;
else if (strcmp("row-reverse", attr->Value()) == 0)
dir = YGFlexDirectionRowReverse;
YGNodeStyleSetFlexDirection(y_node, dir);
break;
}
case att::kAttribute::FlexWrap:
YGNodeStyleSetFlexWrap(y_node, attr->IntValue() ? YGWrapWrap : YGWrapNoWrap);
break;
case att::kAttribute::Padding:
{
glm::vec4 pad;
int n = sscanf(attr->Value(), "%f %f %f %f", &pad.x, &pad.y, &pad.z, &pad.w);
if (n == 1)
{
YGNodeStyleSetPadding(y_node, YGEdgeTop, pad.x);
YGNodeStyleSetPadding(y_node, YGEdgeRight, pad.x);
YGNodeStyleSetPadding(y_node, YGEdgeBottom, pad.x);
YGNodeStyleSetPadding(y_node, YGEdgeLeft, pad.x);
}
else
{
YGNodeStyleSetPadding(y_node, YGEdgeTop, pad.x);
YGNodeStyleSetPadding(y_node, YGEdgeRight, pad.y);
YGNodeStyleSetPadding(y_node, YGEdgeBottom, pad.z);
YGNodeStyleSetPadding(y_node, YGEdgeLeft, pad.w);
}
break;
}
case att::kAttribute::Margin:
{
glm::vec4 pad;
int n = sscanf(attr->Value(), "%f %f %f %f", &pad.x, &pad.y, &pad.z, &pad.w);
if (n == 1)
{
YGNodeStyleSetMargin(y_node, YGEdgeTop, pad.x);
YGNodeStyleSetMargin(y_node, YGEdgeRight, pad.x);
YGNodeStyleSetMargin(y_node, YGEdgeBottom, pad.x);
YGNodeStyleSetMargin(y_node, YGEdgeLeft, pad.x);
}
else
{
YGNodeStyleSetMargin(y_node, YGEdgeTop, pad.x);
YGNodeStyleSetMargin(y_node, YGEdgeRight, pad.y);
YGNodeStyleSetMargin(y_node, YGEdgeBottom, pad.z);
YGNodeStyleSetMargin(y_node, YGEdgeLeft, pad.w);
}
break;
}
case att::kAttribute::Color:
{
glm::vec4 pad;
int n = sscanf(attr->Value(), "%f %f %f %f", &pad.x, &pad.y, &pad.z, &pad.w);
if (n == 1)
{
color = glm::vec4(pad.x);
}
else
{
color = pad;
}
break;
}
default:
// other_attributes_handler()
break;
}
}
void load(const char* path)
{
struct stat tmp_info;
if (stat("data/layout.xml", &tmp_info) != 0)
return;
if (tmp_info.st_mtime <= m_file_info.st_mtime)
return;
m_file_info = tmp_info;
children.clear();
YGNodeReset(y_node);
using NodePair = std::pair<YGNodeRef, tinyxml2::XMLElement*>;
std::stack<NodePair> stack;
tinyxml2::XMLDocument xml;
auto ret = xml.LoadFile(path);
load_internal(xml.RootElement());
}
void load_internal(const tinyxml2::XMLElement* x_node)
{
auto attr = x_node->FirstAttribute();
while (attr)
{
parse_attributes(att::value(attr->Name()), attr);
attr = attr->Next();
}
auto x_child = x_node->FirstChildElement();
while (x_child)
{
//Node n;
children.emplace_back();
auto& n = children.back();
n.parent = this;
YGNodeInsertChild(y_node, n.y_node, YGNodeGetChildCount(y_node));
n.load_internal(x_child);
x_child = x_child->NextSiblingElement();
}
}
};
void App::update_layout()
{
YGNodeCalculateLayout(y_root, YGUndefined, YGUndefined, YGDirectionLTR);
@@ -83,13 +334,13 @@ void App::load_layout()
//YGNodeStyleSetWidthPercent(y_root, 100);
YGNodeStyleSetHeight(y_root, height);
//YGNodeStyleSetHeightPercent(y_root, 100);
YGNodeStyleSetFlexDirection(y_root, YGFlexDirectionRow);
YGNodeStyleSetFlexWrap(y_root, YGWrapWrap);
YGNodeStyleSetPadding(y_root, YGEdgeAll, 0);
YGNodeStyleSetPadding(y_root, YGEdgeTop, 0);
YGNodeStyleSetPadding(y_root, YGEdgeRight, 0);
YGNodeStyleSetPadding(y_root, YGEdgeBottom, 0);
YGNodeStyleSetPadding(y_root, YGEdgeLeft, 0);
//YGNodeStyleSetFlexDirection(y_root, YGFlexDirectionRow);
//YGNodeStyleSetFlexWrap(y_root, YGWrapWrap);
//YGNodeStyleSetPadding(y_root, YGEdgeAll, 0);
//YGNodeStyleSetPadding(y_root, YGEdgeTop, 0);
//YGNodeStyleSetPadding(y_root, YGEdgeRight, 0);
//YGNodeStyleSetPadding(y_root, YGEdgeBottom, 0);
//YGNodeStyleSetPadding(y_root, YGEdgeLeft, 0);
//YGNodeStyleSetJustifyContent(y_root, YGJustifyFlexStart);
using NodePair = std::pair<YGNodeRef, tinyxml2::XMLElement*>;
@@ -122,23 +373,23 @@ void App::load_layout()
YGNodeSetContext(y_node, shape.get());
}
printf("Element %s: ", child->Name());
YGNodeStyleSetWidth(y_node, 0);
YGNodeStyleSetWidthPercent(y_node, 100);
YGNodeStyleSetHeight(y_node, 0);
YGNodeStyleSetHeightPercent(y_node, 100);
YGNodeStyleSetPadding(y_node, YGEdgeAll, 0);
YGNodeStyleSetPadding(y_node, YGEdgeTop, 0);
YGNodeStyleSetPadding(y_node, YGEdgeRight, 0);
YGNodeStyleSetPadding(y_node, YGEdgeBottom, 0);
YGNodeStyleSetPadding(y_node, YGEdgeLeft, 0);
//YGNodeStyleSetWidth(y_node, 0);
//YGNodeStyleSetWidthPercent(y_node, 100);
//YGNodeStyleSetHeight(y_node, 0);
//YGNodeStyleSetHeightPercent(y_node, 100);
//YGNodeStyleSetPadding(y_node, YGEdgeAll, 0);
//YGNodeStyleSetPadding(y_node, YGEdgeTop, 0);
//YGNodeStyleSetPadding(y_node, YGEdgeRight, 0);
//YGNodeStyleSetPadding(y_node, YGEdgeBottom, 0);
//YGNodeStyleSetPadding(y_node, YGEdgeLeft, 0);
YGNodeStyleSetPosition(y_node, YGEdgeAll, 0);
YGNodeStyleSetPosition(y_node, YGEdgeTop, 0);
YGNodeStyleSetPosition(y_node, YGEdgeRight, 0);
YGNodeStyleSetPosition(y_node, YGEdgeBottom, 0);
YGNodeStyleSetPosition(y_node, YGEdgeLeft, 0);
YGNodeStyleSetOverflow(y_node, YGOverflowHidden);
//YGNodeStyleSetPosition(y_node, YGEdgeAll, 0);
//YGNodeStyleSetPosition(y_node, YGEdgeTop, 0);
//YGNodeStyleSetPosition(y_node, YGEdgeRight, 0);
//YGNodeStyleSetPosition(y_node, YGEdgeBottom, 0);
//YGNodeStyleSetPosition(y_node, YGEdgeLeft, 0);
//
//YGNodeStyleSetOverflow(y_node, YGOverflowHidden);
while (attr)
{
@@ -284,7 +535,7 @@ void App::load_layout()
}
update_layout();
}
Node nn;
void App::init()
{
static const char* shader_v =
@@ -351,6 +602,8 @@ void App::init()
#endif
load_layout();
nn.load("data/layout.xml");
nn.update(width, height);
for (auto& s : shapes_list)
{
@@ -453,28 +706,55 @@ void App::update(float dt)
shader_color.u_vec4("col", { .3f, .3f, .3f, 1 });
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
for (auto& s : shapes_list)
// for (auto& s : shapes_list)
// {
// auto layout = *reinterpret_cast<glm::vec4*>(YGNodeGetContext(s->y_node));
// auto y_parent = YGNodeGetParent(s->y_node);
// if (y_parent && YGNodeGetContext(y_parent))
// {
// auto box = *reinterpret_cast<glm::vec4*>(YGNodeGetContext(y_parent));
// glEnable(GL_SCISSOR_TEST);
// glScissor(box.x, height - box.y - 1 - box.w, box.z, box.w);
// }
// //glScissor(10, height - 10 - 1 - 50, 480, 50);
//
// glm::mat4 pivot = glm::translate(glm::vec3(.5f, .5f, 0.f));
// glm::mat4 scale = glm::scale(glm::vec3(layout.zw(), 1.f));
// glm::mat4 pos = glm::translate(glm::vec3(layout.xy(), 0));
// auto mvp = proj * pos * scale * pivot;
//
// //shader_uv.use();
// //shader_uv.u_mat4("mvp", mvp);
// //plane.draw_fill();
//
// shader_color.u_vec4("col", s->color);
// shader_color.use();
// shader_color.u_mat4("mvp", mvp);
// plane.draw_fill();
//
// shader_color.u_vec4("col", { 1, 1, 1, 1 });
// shader_color.use();
// shader_color.u_mat4("mvp", mvp);
// plane.draw_stroke();
// glDisable(GL_SCISSOR_TEST);
// }
std::stack<Node*> nodes;
Node* current = &nn;
nodes.push(current);
//glEnable(GL_SCISSOR_TEST);
while (current)
{
auto layout = *reinterpret_cast<glm::vec4*>(YGNodeGetContext(s->y_node));
auto y_parent = YGNodeGetParent(s->y_node);
if (y_parent && YGNodeGetContext(y_parent))
{
auto box = *reinterpret_cast<glm::vec4*>(YGNodeGetContext(y_parent));
glEnable(GL_SCISSOR_TEST);
glScissor(box.x, height - box.y - 1 - box.w, box.z, box.w);
}
//glScissor(10, height - 10 - 1 - 50, 480, 50);
nodes.pop();
glm::mat4 pivot = glm::translate(glm::vec3(.5f, .5f, 0.f));
glm::mat4 scale = glm::scale(glm::vec3(layout.zw(), 1.f));
glm::mat4 pos = glm::translate(glm::vec3(layout.xy(), 0));
glm::mat4 scale = glm::scale(glm::vec3(current->m_size, 1.f));
glm::mat4 pos = glm::translate(glm::vec3(current->m_pos, 0));
auto mvp = proj * pos * scale * pivot;
//shader_uv.use();
//shader_uv.u_mat4("mvp", mvp);
//plane.draw_fill();
shader_color.u_vec4("col", s->color);
auto box = current->m_clip;
glScissor(box.x, height - box.y - 1 - box.w, box.z, box.w);
shader_color.u_vec4("col", current->color);
shader_color.use();
shader_color.u_mat4("mvp", mvp);
plane.draw_fill();
@@ -483,8 +763,12 @@ void App::update(float dt)
shader_color.use();
shader_color.u_mat4("mvp", mvp);
plane.draw_stroke();
glDisable(GL_SCISSOR_TEST);
for (auto& c : current->children)
nodes.push(&c);
current = nodes.size() ? nodes.top() : nullptr;
}
glDisable(GL_SCISSOR_TEST);
tex.unbind();
sampler.unbind();
@@ -515,6 +799,7 @@ void App::resize(float w, float h)
YGNodeStyleSetWidth(y_root, width);
YGNodeStyleSetHeight(y_root, height);
update_layout();
nn.update(width, height);
}
void App::mouse_down(int button, float x, float y)