Added progress Bar.

CMakeLists.txt

@@ -7,7 +7,7 @@ project(door++
 # zf_log target (required)
 set(HEADERS_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 set(HEADERS door.h)
-set(SOURCES door.cpp ansicolor.cpp lines.cpp panel.cpp anyoption.cpp)
+set(SOURCES door.cpp ansicolor.cpp lines.cpp panel.cpp anyoption.cpp bar.cpp)
 
 # add_subdirectory(opendoors)
 

bar.cpp

@@ -0,0 +1,207 @@
+#include "door.h"
+
+#include "utf8.h"
+#include <iomanip>
+#include <iostream>
+
+namespace door {
+
+Bar::Bar(int width, BarStyle s) : text(' ', width), line(text) {
+  length = width;
+  style = s;
+  // set updater
+  // set colorizer
+  // profit
+}
+
+void Bar::update_bar(void) {
+  unsigned long step_width;
+
+  text.clear();
+
+  switch (style) {
+  case BarStyle::SOLID:
+  case BarStyle::PERCENTAGE:
+  case BarStyle::PERCENT_SPACE: {
+    step_width = 100 * 100 / length;
+    int steps = current_percent / step_width;
+    // number of steps visible.
+
+    // for now:
+    if (door::unicode)
+      for (int i = 0; i < steps; ++i)
+        text.append("\u2588");
+    else
+      text.assign(steps, '\xdb');
+
+    for (int x = steps; x < length; ++x)
+
+      text.append(" ");
+
+    // line.setText(text);
+    /*
+    cout << "percent " << std::setw(5) << current_percent << " : step_width "
+         << std::setw(5) << step_width << std::setw(5) << steps << " of "
+         << std::setw(5) << length << " ";
+    */
+    if ((style == BarStyle::PERCENTAGE) || (style == BarStyle::PERCENT_SPACE)) {
+      // Put the % text in the text.
+      std::string percent;
+      percent = std::to_string(current_percent / 100);
+
+      int pos = (length / 2) - 1;
+
+      if (percent != "100") {
+        percent.append(1, '%');
+        if (percent.length() < 3)
+          percent.insert(0, " ");
+      }
+      if (style == BarStyle::PERCENT_SPACE) {
+        percent.insert(0, 1, ' ');
+        percent.append(1, ' ');
+        pos -= 1;
+      }
+
+      // cout << "[" << percent << "] " << std::setw(3) << pos << " ";
+
+      // unicode ... is unipain.
+      if (door::unicode) {
+        // handle unicode here
+        // Find start position, and ending position for the replacement.
+        const char *cp = text.c_str();
+        const char *end = cp;
+        while (*end != 0)
+          end++;
+
+        for (int i = 0; i < pos; i++) {
+          utf8::next(cp, end);
+        }
+        // find position using unicode position
+        int unicode_pos = cp - text.c_str();
+
+        const char *cp_len_start = cp;
+        const char *cp_len = cp;
+        for (int i = 0; i < percent.length(); i++) {
+          utf8::next(cp_len, end);
+        }
+
+        int unicode_len = cp_len - cp_len_start;
+        // cout << " " << std::setw(3) << unicode_pos << " " << std::setw(3) << unicode_len << " ";
+        text.replace(unicode_pos, unicode_len, percent);
+      } else {
+        text.replace(pos, percent.length(), percent);
+      };
+    }
+
+    line.setText(text);
+    break;
+  };
+  case BarStyle::HALF_STEP: {
+    step_width = 100 * 100 / length;
+    int steps = current_percent * 2 / step_width;
+
+    /*
+    cout << "percent " << std::setw(5) << current_percent << " : step_width "
+         << std::setw(5) << step_width << std::setw(5) << steps << " of "
+         << std::setw(5) << length << " ";
+    */
+
+    if (door::unicode)
+      for (int i = 0; i < steps / 2; i++)
+        text.append("\u2588");
+    else
+      text.assign(steps / 2, '\xdb');
+
+    if (steps % 2 == 1) {
+      if (door::unicode)
+        text.append("\u258c");
+      else
+        text.append(1, '\xdd');
+      steps++;
+    }
+    for (int x = steps; x < length * 2; x += 2)
+      text.append(" ");
+    line.setText(text);
+
+    break;
+  }
+
+  case BarStyle::GRADIENT: {
+    step_width = 100 * 100 / length;
+    int steps = current_percent * 4 / step_width;
+
+    /*
+    cout << "percent " << std::setw(5) << current_percent << " : step_width "
+         << std::setw(5) << step_width << std::setw(5) << steps << " of "
+         << std::setw(5) << length << " ";
+    */
+
+    if (door::unicode)
+      for (int i = 0; i < steps / 4; i++)
+        text.append("\u2588");
+    else
+      text.assign(steps / 4, '\xdb');
+
+    if (steps % 4 != 0) {
+      // display the gradient
+      switch (steps % 4) {
+      case 1:
+        if (door::unicode)
+          text.append("\u2591");
+        else
+          text.append(1, '\xb0');
+        break;
+
+      case 2:
+        if (door::unicode)
+          text.append("\u2592");
+        else
+          text.append(1, '\xb1');
+        break;
+
+      case 3:
+        if (door::unicode)
+          text.append("\u2593");
+        else
+          text.append(1, '\xb2');
+        break;
+      }
+      /*
+      if (door::unicode)
+        text.append("\u258c");
+      else
+        text.append(1, '\xdd');
+        */
+
+      while (steps % 4 != 0)
+        steps++;
+    }
+    for (int x = steps; x < length * 4; x += 4)
+      text.append(" ");
+    line.setText(text);
+
+    break;
+  }
+  }
+  // cout << "percent" << current_percent << " : " << steps << " of " << length
+  // << " " << std::endl;
+}
+
+void Bar::set(float percent) {
+  current_percent = (unsigned long)(percent * 100.0);
+  update_bar();
+}
+
+void Bar::set(int value, int max) {
+  // I'm thinking the ulong would be % * 100.
+  unsigned long percentage = value * 10000 / max;
+  // float percentage = ((float)pos / (float)max) * 100.0;
+  set(percentage);
+}
+
+void Bar::set(unsigned long percent) {
+  current_percent = percent;
+  update_bar();
+}
+
+} // namespace door

door.h

@@ -577,6 +577,30 @@ public:
 /// Example BlueYellow renderFunction
 extern renderFunction rBlueYellow;
 
+/*
+Maybe I don't want to use a line for this?  It doesn't have location!
+(but if it is a line, you can put it into a panel,which does have
+location...)
+*/
+enum class BarStyle { SOLID, HALF_STEP, GRADIENT, PERCENTAGE, PERCENT_SPACE };
+
+class Bar {
+private:
+  unsigned long current_percent;
+  BarStyle style;
+  std::string text;
+  void update_bar(void);
+  int length;
+
+public:
+  Line line;
+  Bar(int width, BarStyle s = BarStyle::SOLID);
+  // helper ...
+  void set(int value, int max);
+  void set(float percent);
+  void set(unsigned long percent);
+};
+
 /**
  * The different Borders supported by Panel.
  *