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LibGUI: Support bitmaps in GTableView cells.

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Use this to add an icon for each process in the ProcessManager.
Right now they all use a generic gear icon, but I'd like to have
per-process icons, obviously. :^)
This commit is contained in:
Andreas Kling 2019-02-28 20:16:10 +01:00
parent 3fe7ddadaf
commit b132150799
4 changed files with 30 additions and 13 deletions
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31
Applications/ProcessManager/ProcessTableModel.cpp
View file

@ -4,14 +4,15 @@
#include <pwd.h>
enum Column {
PID = 0,
Icon = 0,
Name,
CPU,
State,
User,
Priority,
User,
PID,
Linear,
Physical,
CPU,
Name,
__Count
};
@ -21,6 +22,9 @@ ProcessTableModel::ProcessTableModel()
while (auto* passwd = getpwent())
m_usernames.set(passwd->pw_uid, passwd->pw_name);
endpwent();
m_generic_process_icon = GraphicsBitmap::load_from_file(GraphicsBitmap::Format::RGBA32, "/res/icons/gear16.rgb", { 16, 16 });
ASSERT(m_generic_process_icon);
}
ProcessTableModel::~ProcessTableModel()
@ -40,6 +44,7 @@ int ProcessTableModel::column_count() const
String ProcessTableModel::column_name(int column) const
{
switch (column) {
case Column::Icon: return "";
case Column::PID: return "PID";
case Column::State: return "State";
case Column::User: return "User";
@ -55,14 +60,15 @@ String ProcessTableModel::column_name(int column) const
GTableModel::ColumnMetadata ProcessTableModel::column_metadata(int column) const
{
switch (column) {
case Column::PID: return { 30, TextAlignment::CenterRight };
case Column::State: return { 80, TextAlignment::CenterLeft };
case Column::Priority: return { 75, TextAlignment::CenterLeft };
case Column::User: return { 60, TextAlignment::CenterLeft };
case Column::Linear: return { 70, TextAlignment::CenterRight };
case Column::Physical: return { 70, TextAlignment::CenterRight };
case Column::CPU: return { 30, TextAlignment::CenterRight };
case Column::Name: return { 200, TextAlignment::CenterLeft };
case Column::Icon: return { 16, TextAlignment::CenterLeft };
case Column::PID: return { 25, TextAlignment::CenterRight };
case Column::State: return { 75, TextAlignment::CenterLeft };
case Column::Priority: return { 65, TextAlignment::CenterLeft };
case Column::User: return { 50, TextAlignment::CenterLeft };
case Column::Linear: return { 65, TextAlignment::CenterRight };
case Column::Physical: return { 65, TextAlignment::CenterRight };
case Column::CPU: return { 25, TextAlignment::CenterRight };
case Column::Name: return { 140, TextAlignment::CenterLeft };
default: ASSERT_NOT_REACHED();
}
}
@ -93,6 +99,7 @@ GVariant ProcessTableModel::data(int row, int column) const
auto it = m_processes.find(m_pids[row]);
auto& process = *(*it).value;
switch (column) {
case Column::Icon: return *m_generic_process_icon;
case Column::PID: return process.current_state.pid;
case Column::State: return process.current_state.state;
case Column::User: return process.current_state.user;

1
Applications/ProcessManager/ProcessTableModel.h
View file

@ -44,4 +44,5 @@ private:
HashMap<pid_t, OwnPtr<Process>> m_processes;
Vector<pid_t> m_pids;
int m_selected_row { -1 };
RetainPtr<GraphicsBitmap> m_generic_process_icon;
};

6
LibGUI/GTableView.cpp
View file

@ -121,7 +121,11 @@ void GTableView::paint_event(GPaintEvent& event)
auto column_metadata = m_model->column_metadata(column_index);
int column_width = column_metadata.preferred_width;
Rect cell_rect(horizontal_padding() + x_offset, y, column_width, item_height());
painter.draw_text(cell_rect, m_model->data(row_index, column_index).to_string(), column_metadata.text_alignment, text_color);
auto data = m_model->data(row_index, column_index);
if (data.is_bitmap())
painter.blit(cell_rect.location(), data.as_bitmap(), data.as_bitmap().rect());
else
painter.draw_text(cell_rect, data.to_string(), column_metadata.text_alignment, text_color);
x_offset += column_width + horizontal_padding() * 2;
}
++painted_item_index;

5
LibGUI/GVariant.h
View file

@ -23,6 +23,11 @@ public:
};
bool is_valid() const { return m_type != Type::Invalid; }
bool is_bool() const { return m_type == Type::Bool; }
bool is_int() const { return m_type == Type::Int; }
bool is_float() const { return m_type == Type::Float; }
bool is_string() const { return m_type == Type::String; }
bool is_bitmap() const { return m_type == Type::Bitmap; }
Type type() const { return m_type; }
bool as_bool() const