better icon placement

[vrfileman] / src / fs.cc

diff --git a/src/fs.cc b/src/fs.cc
index d038546..0da07e5 100644 (file)
--- a/src/fs.cc
+++ b/src/fs.cc
@@ -4,6 +4,7 @@
 #include <errno.h>
 #include <string>
 #include <map>
+#include <algorithm>
 #include <unistd.h>
 #include <dirent.h>
 #include <sys/stat.h>
@@ -12,6 +13,7 @@
 #include "gmath/gmath.h"
 #include "opengl.h"
 #include "app.h"
+#include "drawtext.h"
 
 static IconRenderer *iconrend;
 
@@ -19,6 +21,10 @@ static std::map<std::string, FSNode*> node_cache;
 static FSNode *cur_node;
 static int start_child;
 
+static dtx_font *fat_font;
+#define FAT_FONT_SZ    32
+
+
 bool init_fs()
 {
        iconrend = new ShapesIcons;
@@ -26,6 +32,11 @@ bool init_fs()
                return false;
        }
 
+       if(!(fat_font = dtx_open_font("data/fat.font", FAT_FONT_SZ))) {
+               fprintf(stderr, "failed to open font file data/fat.font\n");
+               return false;
+       }
+
        cur_node = get_fsnode(0);
        cur_node->expand();
        return true;
@@ -51,11 +62,22 @@ static Vec3 icon_pos(int row, int col, int ncols, float row_spacing, float radiu
        return Vec3(x, y, z);
 }
 
+static float icon_angle(int col, int ncols, float max_angle = 0.0f)
+{
+       if(max_angle > 0) {
+               return max_angle * ((float)col / (float)(ncols - 1) - 0.5);
+       }
+       return 2.0 * M_PI * (float)col / (float)ncols;
+}
+
 void draw_fs()
 {
-       static const int ncols = 8;
        static const float row_spacing = 2.0;
        static const float radius = 5;
+       static const float umax = 0.42;
+       static const float max_icon_angle = M_PI * 2.0 * umax;
+
+       int max_ncols = std::max<int>(1, umax * 16);
 
        Mat4 base_xform;
        base_xform.rotate(time_sec, 0, 0);
@@ -65,25 +87,40 @@ void draw_fs()
        glUseProgram(0);
        glDisable(GL_TEXTURE_2D);
 
-       int first = start_child % ncols;
        int nchildren = (int)cur_node->children.size();
+       int ncols = std::min(cur_node->nfiles, max_ncols);
+
+       int first = start_child % ncols;
        int col = 0, row = 0;
 
        for(int i=0; i<nchildren; i++) {
                int idx = (i + first) % nchildren;
+               FSNode *node = cur_node->children[idx];
 
-               if(cur_node->children[idx]->type == FSTYPE_DIR) {
+               if(node->type == FSTYPE_DIR) {
                        continue;
                }
 
-               Vec3 pos = icon_pos(row, col, ncols, row_spacing, radius);
+               float angle = icon_angle(col, ncols, max_icon_angle);
 
                Mat4 xform = base_xform;
-               xform.translate(pos);
+               xform.translate(0, row * row_spacing, -radius);
+               xform.rotate_y(angle);
 
                glPushMatrix();
                glMultMatrixf(xform[0]);
-               iconrend->draw(cur_node->children[idx]);
+               iconrend->draw(node);
+               glPopMatrix();
+
+               glPushMatrix();
+               xform = Mat4::identity;
+               xform.translate(-dtx_string_width(node->path.get_name()) / 2.0, 0, 0);
+               xform.scale(0.01);
+               xform.translate(0, 1 + row * row_spacing, -radius);
+               xform.rotate_y(angle);
+               glMultMatrixf(xform[0]);
+
+               dtx_string(node->path.get_name());
                glPopMatrix();
 
                if(++col >= ncols) {
@@ -156,6 +193,7 @@ FSNode::FSNode()
        type = FSTYPE_UNKNOWN;
        size = 0;
        parent = 0;
+       nfiles = ndirs = 0;
 }
 
 bool FSNode::expand()
@@ -180,6 +218,15 @@ bool FSNode::expand()
                if(!node) continue;
 
                children.push_back(node);
+               switch(node->type) {
+               case FSTYPE_FILE:
+                       ++nfiles;
+                       break;
+               case FSTYPE_DIR:
+                       ++ndirs;
+               default:
+                       break;
+               }
        }
        printf("expanded %d children\n", (int)children.size());