Support for minimum height and width in libdanbooru

This will allow to filter posts with less than required minimum height
and width.

Currently this is done client-side, I don't plan on doing checks on the
API until/if the multiple API branch is merged.

src/libdanbooru/danbooruservice.cpp

@@ -329,6 +329,16 @@ int DanbooruService::maxPosts() const
     return m_maxPosts;
 }
 
+int DanbooruService::minimumWidth() const
+{
+    return m_minimumWidth > 0 ? m_minimumWidth: -1;
+}
+
+int DanbooruService::minimumHeight() const
+{
+    return m_minimumHeight > 0 ? m_minimumHeight: -1;
+}
+
 void DanbooruService::nextPostPage()
 {
     m_currentPage++;
@@ -449,6 +459,18 @@ void DanbooruService::processPostList(KJob *job)
             continue;
         }
 
+        if (post->width() < minimumWidth()) {
+            m_postsToFetch--;
+            delete post;
+            continue;
+        }
+
+        if (post->height() < minimumHeight()) {
+            m_postsToFetch--;
+            delete post;
+            continue;
+        }
+
         QPixmap pix;
 
 //         qCDebug(LIBDANBOORU) << "About to donwload images";
@@ -618,4 +640,16 @@ void DanbooruService::setCurrentPage(int page)
     m_currentPage = page;
 }
 
+void Danbooru::DanbooruService::setResolution(unsigned int width, unsigned int height)
+{
+    if (width > 0) {
+        m_minimumWidth = width;
+    }
+
+    if (height > 0) {
+        m_minimumHeight = height;
+    }
+}
+
+
 } // namespace Danbooru

src/libdanbooru/danbooruservice.h

@@ -93,6 +93,8 @@ private:
     DanbooruPost::Ratings m_maxRating;
     int m_maxPosts;
     int m_currentPage;
+    unsigned int m_minimumHeight = 0;
+    unsigned int m_minimumWidth = 0;
     QStringList m_tags;
 
     unsigned int m_postsToFetch; // To tell when to quit
@@ -207,6 +209,10 @@ public:
      **/
     QStringList postTags() const;
 
+    int minimumWidth() const;
+
+    int minimumHeight() const;
+
     /**
      * @brief Resets the service to the default state, clearing the page counters.
      **/
@@ -282,6 +288,11 @@ public:
 
     void setPostTags(const QStringList &tags);
 
+    void setResolution(unsigned int width = 0, unsigned int height = 0);
+
+    void setMinimumWidth(unsigned int width) { m_minimumWidth = width; };
+    void setMinimumHeight(unsigned int height) { m_minimumHeight = height; };
+
 private Q_SLOTS:
     void processPostList(KJob *job);
     void processTagList(KJob *job);