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improve image loading a bit (close #6)

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This commit is contained in:
ouwou
2021-01-16 23:49:27 -05:00
parent 3a25249a0d
commit 3f6024ddf2
7 changed files with 79 additions and 103 deletions
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41
components/lazyimage.cpp Normal file
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#include "lazyimage.hpp"
#include "../abaddon.hpp"
LazyImage::LazyImage(int w, int h, bool use_placeholder)
: m_width(w)
, m_height(h) {
static int sidx = 0;
sidx++;
m_idx = sidx;
if (use_placeholder)
property_pixbuf() = Abaddon::Get().GetImageManager().GetPlaceholder(w)->scale_simple(w, h, Gdk::INTERP_BILINEAR);
signal_draw().connect(sigc::mem_fun(*this, &LazyImage::OnDraw));
}
LazyImage::LazyImage(const std::string &url, int w, int h, bool use_placeholder)
: m_url(url)
, m_width(w)
, m_height(h) {
static int sidx = 0;
sidx++;
m_idx = sidx;
if (use_placeholder)
property_pixbuf() = Abaddon::Get().GetImageManager().GetPlaceholder(w)->scale_simple(w, h, Gdk::INTERP_BILINEAR);
signal_draw().connect(sigc::mem_fun(*this, &LazyImage::OnDraw));
}
void LazyImage::SetURL(const std::string &url) {
m_url = url;
}
bool LazyImage::OnDraw(const Cairo::RefPtr<Cairo::Context> &context) {
if (!m_needs_request || m_url == "") return false;
m_needs_request = false;
auto cb = [this](const Glib::RefPtr<Gdk::Pixbuf> &pb) {
property_pixbuf() = pb->scale_simple(m_width, m_height, Gdk::INTERP_BILINEAR);
};
Abaddon::Get().GetImageManager().LoadFromURL(m_url, sigc::track_obj(cb, *this));
return false;
}