text entry, with cursor, but no keyboard

1 files changed, 138 insertions, 0 deletions

diff --git a/src/user/raleigh/w/entry.cpp b/src/user/raleigh/w/entry.cpp
new file mode 100644
index 0000000..de8bd82
--- /dev/null
+++ b/src/user/raleigh/w/entry.cpp
@@ -0,0 +1,138 @@
+#include <raleigh/w/entry.h>
+#include <knob/format.h>
+#include <knob/block.h>
+#include <knob/heap.h>
+
+namespace raleigh {
+  entry::entry(uint32_t rows, uint32_t cols, const char *default_text,
+    const char *font, _pixel_t bg, _pixel_t fg, _pixel_t border_color)
+    : rows(rows), cols(cols), bg(bg), fg(fg), border_color(border_color),
+      fi(get_font(font)), data(new char[rows * cols]),
+      line_indices(new uint32_t[rows + 1]), first_paint(true) {
+    size = coord(fi->space_width * (cols - 1) + fi->char_width + 6, fi->space_height * (rows - 1) + fi->char_height + 6);
+    closest_opaque = this;
+
+    end_x = 0;
+    end_y = 0;
+    line_indices[0] = 0;
+    for (end_d = 0; default_text[end_d]; ++end_d) {
+      if (end_d == rows * cols - 1)
+        break;
+      data[end_d] = default_text[end_d];
+      if ((default_text[end_d] == '\n') || (++end_x == cols)) {
+        if (end_y == rows - 1)
+          break;
+        line_indices[++end_y] = end_d + 1;
+        end_x = 0;
+      }
+    }
+    line_indices[end_y + 1] = end_d;
+    cur_x = end_x;
+    cur_y = end_y;
+    cur_d = end_d;
+    data[end_d] = '\0';
+  }
+
+  void entry::notify_window_change() {}
+
+  void entry::paint_text(_pixel_t *pixbuf, uint32_t pitch) {
+    uint32_t y = 0;
+    uint32_t x = -1;
+    for (const char *i = data; *i; ++i) {
+      if (*i == '\n') {
+        ++y;
+        x = -1;
+      }
+      else {
+        if (++x == cols) {
+          ++y;
+          x = 0;
+        }
+        put_char_no_bg(fi, *i, pixbuf + (window_offset.y + 3 + y * fi->space_height) * pitch + (window_offset.x + 3 + x * fi->space_width), pitch, fg);
+      }
+    }
+  }
+
+  void entry::paint(_pixel_t *pixbuf, uint32_t pitch) {
+    _pixel_t *const cur_ptr = pixbuf + (window_offset.y + 3 + cur_y * fi->space_height) * pitch + (window_offset.x + 3 + cur_x * fi->space_width);
+    _pixel_t *const old_cur_ptr = pixbuf + (window_offset.y + 3 + cur_y_last_paint * fi->space_height) * pitch + (window_offset.x + 3 + cur_x_last_paint * fi->space_width);
+
+    if (first_paint) {
+      for (uint32_t x = 0; x < size.x; ++x) {
+        pixbuf[(window_offset.y) * pitch + window_offset.x + x] = border_color;
+        pixbuf[(window_offset.y + size.y - 1) * pitch + window_offset.x + x] = border_color;
+      }
+      for (uint32_t y = 1; y < size.y - 1; ++y) {
+        pixbuf[(window_offset.y + y) * pitch + window_offset.x] = border_color;
+        pixbuf[(window_offset.y + y) * pitch + window_offset.x + size.x - 1] = border_color;
+      }
+
+      for (uint32_t y = 1; y < size.y - 1; ++y)
+        for (uint32_t x = 1; x < size.x - 1; ++x)
+          pixbuf[(window_offset.y + y) * pitch + (window_offset.x + x)] = bg;
+
+      paint_text(pixbuf, pitch);
+      first_paint = false;
+    }
+
+    else if (text_changed_since_last_paint) {
+      for (uint32_t y = 3; y < size.y - 3; ++y)
+        for (uint32_t x = 3; x < size.x - 3; ++x)
+          pixbuf[(window_offset.y + y) * pitch + (window_offset.x + x)] = bg;
+      paint_text(pixbuf, pitch);
+      text_changed_since_last_paint = false;
+    }
+
+    else {
+      for (uint32_t y = 0; y < fi->char_height; ++y) {
+        old_cur_ptr[y * pitch] = bg;
+        old_cur_ptr[y * pitch + 1] = bg;
+      }
+      if (data[cur_d_last_paint] && (data[cur_d_last_paint] != '\n'))
+        put_char_no_bg(fi, data[cur_d_last_paint], old_cur_ptr, pitch, fg);
+    }
+
+    for (uint32_t y = 0; y < fi->char_height; ++y) {
+      cur_ptr[y * pitch] = fg;
+      cur_ptr[y * pitch + 1] = fg;
+    }
+
+    cur_y_last_paint = cur_y;
+    cur_x_last_paint = cur_x;
+    cur_d_last_paint = cur_d;
+  }
+
+  bool entry::try_handle_click(coord window_coords, enum mouse_packet::mouse_button click_type, bool up) {
+    if (up || (click_type != mouse_packet::LEFT))
+      return false;
+
+    if (window_coords.x - window_offset.x < 3)
+      window_coords.x = 3 + window_offset.x;
+    else if (window_coords.x - window_offset.x > size.x - 4)
+      window_coords.x = size.x - 4 + window_offset.x;
+    if (window_coords.y - window_offset.y < 3)
+      window_coords.y = 3 + window_offset.y;
+    else if (window_coords.y - window_offset.y > size.y - 4)
+      window_coords.y = size.y - 4 + window_offset.y;
+
+    cur_y = (window_coords.y - window_offset.y - 3) / fi->space_height;
+    cur_x = (window_coords.x - window_offset.x - 3) / fi->space_width;
+    if (cur_y > end_y) {
+      cur_y = end_y;
+      cur_x = end_x;
+    }
+    cur_d = line_indices[cur_y] + cur_x;
+
+    if (cur_d >= line_indices[cur_y + 1]) {
+      cur_d = line_indices[cur_y + 1] - 1;
+      if (data[cur_d] != '\n')
+        ++cur_d;
+      cur_x = cur_d - line_indices[cur_y];
+    }
+
+    w->notify_needs_paint(*this);
+    return true;
+  }
+
+  void entry::notify_has_opaque_parent(widget *parent) {}
+}
\ No newline at end of file