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correct the process of failure of resizing a window

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This commit is contained in:
Jinhao
2017-09-28 08:29:19 +08:00
parent 8d9351e051
commit d715c87d93
8 changed files with 115 additions and 131 deletions
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29
source/gui/detail/window_manager.cpp
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@@ -953,24 +953,45 @@ namespace detail
if (wd->dimension == sz)
return false;
//Before resiz the window, creates the new graphics
paint::graphics graph;
paint::graphics root_graph;
if (category::flags::lite_widget != wd->other.category)
{
//If allocation fails, here throws std::bad_alloc.
graph.make(sz);
if (category::flags::root == wd->other.category)
root_graph.make(sz);
}
auto pre_sz = wd->dimension;
wd->dimension = sz;
if(category::flags::lite_widget != wd->other.category)
{
bool graph_state = wd->drawer.graphics.empty();
wd->drawer.graphics.make(sz);
wd->drawer.graphics.swap(graph);
//It shall make a typeface_changed() call when the graphics state is changing.
//Because when a widget is created with zero-size, it may get some wrong result in typeface_changed() call
//Because when a widget is created with zero-size, it may get some wrong results in typeface_changed() call
//due to the invaliable graphics object.
if(graph_state != wd->drawer.graphics.empty())
wd->drawer.typeface_changed();
if(category::flags::root == wd->other.category)
{
wd->root_graph->make(sz);
//wd->root_graph->make(sz);
wd->root_graph->swap(root_graph);
if(false == passive)
native_interface::window_size(wd->root, sz + nana::size(wd->extra_width, wd->extra_height));
if (!native_interface::window_size(wd->root, sz + nana::size(wd->extra_width, wd->extra_height)))
{
wd->dimension = pre_sz;
wd->drawer.graphics.swap(graph);
wd->root_graph->swap(root_graph);
wd->drawer.typeface_changed();
return false;
}
}
#ifndef WIDGET_FRAME_DEPRECATED
else if(category::flags::frame == wd->other.category)